Tuflow - User contributions [en]

Talk:QGIS Tips

2012-08-07T04:00:18Z

Ben Throssell: /* Quickly identify top of levees/embankments as Zln */ new section

== How to Update a Column (Equivalent of MapInfo Update Column) ==

To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries

1. Open Attribute Table

2. Select all CN attributes, this can be achieved if you sort by type so that all CN attributes are grouped,alternatively, for more complex situations, use the Advanced Search tool in the bottom right. This allows you to select using an SQL Query

3. From the attribute table, open the field calculator (you need to be editing to open the field calculator)

4. Ensure that "Only update selected features" is turned on, and set the "Update existing field" to "f"

5. Type "1" into the "Field calculator expression" box and hit "OK". Note, if you want to insert a string such as 'S' you need to enter it with the inverted comma.

[[File:FieldCalculator.jpg]]

Done!

You can also use the field calculator for more advanced tasks, for example when naming the Source attribute for XS, the expression

'XSName'||rownum*50-50||'.csv' **NOTE** Do not copy and paste the expression to the left into QGiS - it has to be typed within the QGIS interfac. Do not type the "||" character either, at the time of writing this operator has to be selected from the available operators in the field calculator.

will generate in the source column:

XSName0.csv

XSName50.csv ...etc

== Extract Cross-Sections/Elevations from 2-D Domain to .csv format ==

To use QGIS to extract cross sections from your DEM:

1. Draw your cross sections using the Tuflow 1d_xs file, be sure to fill in the source column.

2. Install the QGIS plug-in "profile from line" (note you may also need to install shapely - see [http://osgeo-org.1560.n6.nabble.com/plugin-profile-from-line-td4133320.html]).

3. Run the plugin, it is pretty self explanatory, select your cross sections and dem, choose a suitable sampling interval.

4. Upon running the plugin, QGIGS will add a new points file to the workspace, save this as a .csv. This file will contain the source of every cross section as well as the corresponding chainages and elevations.

5. To split this data into individual .csv files in a format that tuflow can read in, download [[File:XSExtractor.xls]]

6. Follow the instructions in the spreadsheet, after exporting to individual worksheets use the Tuflow "Export Entire Workbook to csv" to obtain all the cross sections in a tuflow format.

Done!

== Plot grid elevation profiles==

In QGiS 1.8 the grid elevation profile can be viewed using the Terrain Profile Plugin. Select one raster for which you wish to plot the elevation (you can add more later), and using the tool, draw a line. End the line with a double click, intermediate clicks will be plotted as a vertical line, a useful feature for determing locations.

An example of comparative elevations for a 10m grid and a 2m grid are shown.

[[File:QGiS Elevation Profile.jpg]]

== Alternate method for generating grid from points ==

Tested on QGIS 1.8. 
Install the Sextante plugin, this is a useful tool that incorporates the modules from many other open source GIS packages into Quantum. You will also need to install Saga and set the path of the Saga executable in the Sextante options and configuration menu (under analysis in QGIS).

[[File:QGIS_Sextante.jpg]]

The Saga modules should now all be available in the Sextante Toolbox. 
Load the Zpt file, in the Sextante toolbox select the ''Saga >>> Grid - Gridding >>> Shapes to Grid'' module. Fill out the appropriate options, 
*'''attribute''' should be set as elevation,
*'''target grid''' is user defined,
*'''output extent''' you must click the three dots on the right hand side and select your point file, this will ensure that your grid has the same extent as point file,
*'''cellsize''' I set the cell size to the same size as the grid used in Tuflow.

For more advanced options check out the other gridding modules that Saga (and Grass) offer. If you need to interpolate between points, there are multiple options availableoptions such as Tin, Kriging, Spline etc

[[File:QGIS_Points_to_Grid.jpg]]

== Quickly identify top of levees/embankments as Zln ==

The aim of this tip is to show you how you can get the maximum elvations for you levee/embankment.

Install the Sextante plugin for QGIS - See "Alternative method for generating grid from points ". 

Draw a line along the top of your levee/embankment. 
Select the ''Saga >>> Shapes - Points >>> Convert Lines to Points'' module, fill in as required... 
The '''Insert Distance''' option specifies the maximum distance between lines Save a copy of the shape file so you have two point files that are the same.

[[File:QGiS_LinesToPoints.png]]

Using the field calculator, create a new column (I have called it rownum) and assign a rownum to each attribute. Save the shape file and then create a duplicate shape file using the save as. With the duplicate shape file, do the same as above but add 1 to the the rownum, i.e $rownum + 1 as the expression instead of $rownum

[[File:QGiS_FieldCalc.png]]

Merge these two shapefiles, I use the ''Saga >>> Shapes - Tools >>> Merge Shapes Layers'' module 
Then convert these points back to a line ''Saga >>> Shapes - Lines >>> Convert Points to Lines'' module. You will want to order and seperate by the column with the rownums 
The point of the above is to break your lines into segments. 
To be continued..

File:QGiS FieldCalc.png

2012-08-07T03:45:20Z

Ben Throssell:

File:QGiS LinesToPoints.png

2012-08-07T03:38:16Z

Ben Throssell:

Talk:QGIS Tips

2012-08-07T03:20:43Z

Ben Throssell: /* Alternate method for generating grid from points */

Talk:QGIS Tips

2012-08-07T03:17:46Z

Ben Throssell: /* Display grid elevation */

== How to Update a Column (Equivalent of MapInfo Update Column) ==

To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries

1. Open Attribute Table

2. Select all CN attributes, this can be achieved if you sort by type so that all CN attributes are grouped,alternatively, for more complex situations, use the Advanced Search tool in the bottom right. This allows you to select using an SQL Query

3. From the attribute table, open the field calculator (you need to be editing to open the field calculator)

4. Ensure that "Only update selected features" is turned on, and set the "Update existing field" to "f"

5. Type "1" into the "Field calculator expression" box and hit "OK". Note, if you want to insert a string such as 'S' you need to enter it with the inverted comma.

[[File:FieldCalculator.jpg]]

Done!

You can also use the field calculator for more advanced tasks, for example when naming the Source attribute for XS, the expression

'XSName'||rownum*50-50||'.csv' **NOTE** Do not copy and paste the expression to the left into QGiS - it has to be typed within the QGIS interfac. Do not type the "||" character either, at the time of writing this operator has to be selected from the available operators in the field calculator.

will generate in the source column:

XSName0.csv

XSName50.csv ...etc

== Extract Cross-Sections/Elevations from 2-D Domain to .csv format ==

To use QGIS to extract cross sections from your DEM:

1. Draw your cross sections using the Tuflow 1d_xs file, be sure to fill in the source column.

2. Install the QGIS plug-in "profile from line" (note you may also need to install shapely - see [http://osgeo-org.1560.n6.nabble.com/plugin-profile-from-line-td4133320.html]).

3. Run the plugin, it is pretty self explanatory, select your cross sections and dem, choose a suitable sampling interval.

4. Upon running the plugin, QGIGS will add a new points file to the workspace, save this as a .csv. This file will contain the source of every cross section as well as the corresponding chainages and elevations.

5. To split this data into individual .csv files in a format that tuflow can read in, download [[File:XSExtractor.xls]]

6. Follow the instructions in the spreadsheet, after exporting to individual worksheets use the Tuflow "Export Entire Workbook to csv" to obtain all the cross sections in a tuflow format.

Done!

== Plot grid elevation profiles==

In QGiS 1.8 the grid elevation profile can be viewed using the Terrain Profile Plugin. Select one raster for which you wish to plot the elevation (you can add more later), and using the tool, draw a line. End the line with a double click, intermediate clicks will be plotted as a vertical line, a useful feature for determing locations.

An example of comparative elevations for a 10m grid and a 2m grid are shown.

[[File:QGiS Elevation Profile.jpg]]

== Alternate method for generating grid from points ==

Tested on QGIS 1.8.
Install the Sextante plugin, this is a useful tool that incorporates the modules from many other open source GIS packages into Quantum. You will also need to install Saga and set the path of the Saga executable in the Sextante options and configuration menu (under analysis in QGIS).

[[File:QGIS_Sextante.jpg]]

The Saga modules should now all be available in the Sextante Toolbox. 
Load the Zpt file, in the Sextante toolbox select the ''Saga >>> Grid - Gridding >>> Shapes to Grid'' module. Fill out the appropriate options, 
*'''attribute''' should be set as elevation,
*'''target grid''' is user defined,
*'''output extent''' you must click the three dots on the right hand side and select your point file, this will ensure that your grid has the same extent as point file,
*'''cellsize''' I set the cell size to the same size as the grid used in Tuflow.

For more advanced options check out the other gridding modules that Saga (and Grass) offer. If you need to interpolate between points, there are multiple options availableoptions such as Tin, Kriging, Spline etc

[[File:QGIS_Points_to_Grid.jpg]]

Talk:QGIS Tips

2012-08-07T03:16:19Z

Ben Throssell:

== How to Update a Column (Equivalent of MapInfo Update Column) ==

To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries

1. Open Attribute Table

2. Select all CN attributes, this can be achieved if you sort by type so that all CN attributes are grouped,alternatively, for more complex situations, use the Advanced Search tool in the bottom right. This allows you to select using an SQL Query

3. From the attribute table, open the field calculator (you need to be editing to open the field calculator)

4. Ensure that "Only update selected features" is turned on, and set the "Update existing field" to "f"

5. Type "1" into the "Field calculator expression" box and hit "OK". Note, if you want to insert a string such as 'S' you need to enter it with the inverted comma.

[[File:FieldCalculator.jpg]]

Done!

You can also use the field calculator for more advanced tasks, for example when naming the Source attribute for XS, the expression

'XSName'||rownum*50-50||'.csv' **NOTE** Do not copy and paste the expression to the left into QGiS - it has to be typed within the QGIS interfac. Do not type the "||" character either, at the time of writing this operator has to be selected from the available operators in the field calculator.

will generate in the source column:

XSName0.csv

XSName50.csv ...etc

== Extract Cross-Sections/Elevations from 2-D Domain to .csv format ==

To use QGIS to extract cross sections from your DEM:

1. Draw your cross sections using the Tuflow 1d_xs file, be sure to fill in the source column.

2. Install the QGIS plug-in "profile from line" (note you may also need to install shapely - see [http://osgeo-org.1560.n6.nabble.com/plugin-profile-from-line-td4133320.html]).

3. Run the plugin, it is pretty self explanatory, select your cross sections and dem, choose a suitable sampling interval.

4. Upon running the plugin, QGIGS will add a new points file to the workspace, save this as a .csv. This file will contain the source of every cross section as well as the corresponding chainages and elevations.

5. To split this data into individual .csv files in a format that tuflow can read in, download [[File:XSExtractor.xls]]

6. Follow the instructions in the spreadsheet, after exporting to individual worksheets use the Tuflow "Export Entire Workbook to csv" to obtain all the cross sections in a tuflow format.

Done!

== Display grid elevation ==

In QGiS 1.8 the grid elevation can be viewed using the Terrain Profile Plugin. Select one raster for which you wish to plot the elevation (you can add more later), and using the tool, draw a line. End the line with a double click, intermediate clicks will be plotted as a vertical line, a useful feature for determing locations.

An example of comparative elevations for a 10m grid and a 2m grid are shown.

[[File:QGiS Elevation Profile.jpg]]

== Alternate method for generating grid from points ==

Tested on QGIS 1.8.
Install the Sextante plugin, this is a useful tool that incorporates the modules from many other open source GIS packages into Quantum. You will also need to install Saga and set the path of the Saga executable in the Sextante options and configuration menu (under analysis in QGIS).

[[File:QGIS_Sextante.jpg]]

The Saga modules should now all be available in the Sextante Toolbox. 
Load the Zpt file, in the Sextante toolbox select the ''Saga >>> Grid - Gridding >>> Shapes to Grid'' module. Fill out the appropriate options, 
*'''attribute''' should be set as elevation,
*'''target grid''' is user defined,
*'''output extent''' you must click the three dots on the right hand side and select your point file, this will ensure that your grid has the same extent as point file,
*'''cellsize''' I set the cell size to the same size as the grid used in Tuflow.

For more advanced options check out the other gridding modules that Saga (and Grass) offer. If you need to interpolate between points, there are multiple options availableoptions such as Tin, Kriging, Spline etc

[[File:QGIS_Points_to_Grid.jpg]]

File:QGIS Points to Grid.jpg

2012-08-07T03:05:38Z

Ben Throssell:

File:QGIS Sextante.jpg

2012-08-07T02:52:28Z

Ben Throssell:

Talk:QGIS Tips

2012-08-07T02:43:52Z

Ben Throssell: /* Display grid elevation */

Talk:QGIS Tips

2012-08-07T02:42:04Z

Ben Throssell:

Talk:QGIS Tips

2012-08-07T02:35:39Z

Ben Throssell:

Talk:QGIS Tips

2012-08-07T02:35:12Z

Ben Throssell:

== How to Update a Column (Equivalent of MapInfo Update Column)

To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries

1. Open Attribute Table

2. Select all CN attributes, this can be achieved if you sort by type so that all CN attributes are grouped,alternatively, for more complex situations, use the Advanced Search tool in the bottom right. This allows you to select using an SQL Query

3. From the attribute table, open the field calculator (you need to be editing to open the field calculator)

4. Ensure that "Only update selected features" is turned on, and set the "Update existing field" to "f"

5. Type "1" into the "Field calculator expression" box and hit "OK". Note, if you want to insert a string such as 'S' you need to enter it with the inverted comma.

[[File:FieldCalculator.jpg]]

Done!

You can also use the field calculator for more advanced tasks, for example when naming the Source attribute for XS, the expression

'XSName'||rownum*50-50||'.csv' **NOTE** Do not copy and paste the expression to the left into QGiS - it has to be typed within the QGIS interfac. Do not type the "||" character either, at the time of writing this operator has to be selected from the available operators in the field calculator.

will generate in the source column:

XSName0.csv

XSName50.csv ...etc

== Extract Cross-Sections/Elevations from 2-D Domain to .csv format ==

To use QGIS to extract cross sections from your DEM:

1. Draw your cross sections using the Tuflow 1d_xs file, be sure to fill in the source column.

2. Install the QGIS plug-in "profile from line" (note you may also need to install shapely - see [http://osgeo-org.1560.n6.nabble.com/plugin-profile-from-line-td4133320.html]).

3. Run the plugin, it is pretty self explanatory, select your cross sections and dem, choose a suitable sampling interval.

4. Upon running the plugin, QGIGS will add a new points file to the workspace, save this as a .csv. This file will contain the source of every cross section as well as the corresponding chainages and elevations.

5. To split this data into individual .csv files in a format that tuflow can read in, download [[File:XSExtractor.xls]]

6. Follow the instructions in the spreadsheet, after exporting to individual worksheets use the Tuflow "Export Entire Workbook to csv" to obtain all the cross sections in a tuflow format.

Done!

Talk:QGIS Tips

2012-08-07T02:34:34Z

Ben Throssell: /* Display Elevation Profiles */

How to Update a Column (Equivalent of MapInfo Update Column)

To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries

1. Open Attribute Table

2. Select all CN attributes, this can be achieved if you sort by type so that all CN attributes are grouped,alternatively, for more complex situations, use the Advanced Search tool in the bottom right. This allows you to select using an SQL Query

3. From the attribute table, open the field calculator (you need to be editing to open the field calculator)

4. Ensure that "Only update selected features" is turned on, and set the "Update existing field" to "f"

5. Type "1" into the "Field calculator expression" box and hit "OK". Note, if you want to insert a string such as 'S' you need to enter it with the inverted comma.

[[File:FieldCalculator.jpg]]

Done!

You can also use the field calculator for more advanced tasks, for example when naming the Source attribute for XS, the expression

'XSName'||rownum*50-50||'.csv' **NOTE** Do not copy and paste the expression to the left into QGiS - it has to be typed within the QGIS interfac. Do not type the "||" character either, at the time of writing this operator has to be selected from the available operators in the field calculator.

will generate in the source column:

XSName0.csv

XSName50.csv ...etc

== Extract Cross-Sections/Elevations from 2-D Domain to .csv format ==

To use QGIS to extract cross sections from your DEM:

1. Draw your cross sections using the Tuflow 1d_xs file, be sure to fill in the source column.

2. Install the QGIS plug-in "profile from line" (note you may also need to install shapely - see [http://osgeo-org.1560.n6.nabble.com/plugin-profile-from-line-td4133320.html]).

3. Run the plugin, it is pretty self explanatory, select your cross sections and dem, choose a suitable sampling interval.

4. Upon running the plugin, QGIGS will add a new points file to the workspace, save this as a .csv. This file will contain the source of every cross section as well as the corresponding chainages and elevations.

5. To split this data into individual .csv files in a format that tuflow can read in, download [[File:XSExtractor.xls]]

6. Follow the instructions in the spreadsheet, after exporting to individual worksheets use the Tuflow "Export Entire Workbook to csv" to obtain all the cross sections in a tuflow format.

Done!

== Display Elevation Profiles ==
To display elevation profiles in QGiS you need to install the Terrain Profile Plugin. (QgiS 1.80)

Simply select a raster that you wish to display (you can add more later) and then draw your line. Finish with a double click. Any intermediate clicks will display on your elevation profile as a vertical black line.

Below is a comparison of the 2m grid and the 10m check grid.

[[http://wiki.tuflow.com/images/6/60/QGiS_Elevation_Profile.jpg]]

Talk:QGIS Tips

2012-08-07T02:33:49Z

Ben Throssell: /* Display Elevation Profiles */

Talk:QGIS Tips

2012-08-07T02:32:12Z

Ben Throssell: /* Display Elevation Profiles */

Talk:QGIS Tips

2012-08-07T02:30:56Z

Ben Throssell:

Talk:QGIS Tips

2012-07-31T05:25:20Z

Ben Throssell:

Talk:QGIS Tips

2012-07-31T05:10:35Z

Ben Throssell:

How to Update a Column (Equivalent of MapInfo Update Column)

To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries

1. Open Attribute Table

2. Select all CN attributes, this can be achieved if you sort by type so that all CN attributes are grouped,alternatively, for more complex situations, use the Advanced Search tool in the bottom right. This allows you to select using an SQL Query

3. From the attribute table, open the field calculator (you need to be editing to open the field calculator)

4. Ensure that "Only update selected features" is turned on, and set the "Update existing field" to "f"

5. Type "1" into the "Field calculator expression" box and hit "OK". Note, if you want to insert a string such as 'S' you need to enter it with the inverted comma.

[[File:FieldCalculator.jpg]]

Done!

You can also use the field calculator for more advanced tasks, for example when naming the Source attribute for XS, the expression

'XSName'||rownum*50-50||'.csv' **NOTE** Do not copy and paste the expression to the left into QGiS - it has to be typed within the QGIS interface

will generate in the source column:

XSName0.csv

XSName50.csv ...etc

== Extract Cross-Sections/Elevations from 2-D Domain to .csv format ==

To use QGIS to extract cross sections from your DEM:

1. Draw your cross sections using the Tuflow 1d_xs file, be sure to fill in the source column.

2. Install the QGIS plug-in "profile from line" (note you may also need to install shapely - see [http://osgeo-org.1560.n6.nabble.com/plugin-profile-from-line-td4133320.html]).

3. Run the plugin, it is pretty self explanatory, select your cross sections and dem, choose a suitable sampling interval.

4. Upon running the plugin, QGIGS will add a new points file to the workspace, save this as a .csv. This file will contain the source of every cross section as well as the corresponding chainages and elevations.

5. To split this data into individual .csv files in a format that tuflow can read in, download [[File:XSExtractor.xls]]

6. Follow the instructions in the spreadsheet, after exporting to individual worksheets use the Tuflow "Export Entire Workbook to csv" to obtain all the cross sections in a tuflow format.

Done!

Talk:QGIS Tips

2012-07-31T05:09:59Z

Ben Throssell:

How to Update a Column (Equivalent of MapInfo Update Column)

To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries

1. Open Attribute Table

2. Select all CN attributes, this can be achieved if you sort by type so that all CN attributes are grouped,alternatively, for more complex situations, use the Advanced Search tool in the bottom right. This allows you to select using an SQL Query

3. From the attribute table, open the field calculator (you need to be editing to open the field calculator)

4. Ensure that "Only update selected features" is turned on, and set the "Update existing field" to "f"

5. Type "1" into the "Field calculator expression" box and hit "OK". Note, if you want to insert a string such as 'S' you need to enter it with the inverted comma.

[[File:FieldCalculator.jpg]]

Done!

You can also use the field calculator for more advanced tasks, for example when naming the Source attribute for XS, the expression

'XSName'||rownum*50-50||'.csv' **NOTE** Do not copy and paste the text to the right into QGiS - it has to be typed within the QGIS interface

will generate in the source column:

XSName0.csv

XSName50.csv ...etc

== Extract Cross-Sections/Elevations from 2-D Domain to .csv format ==

To use QGIS to extract cross sections from your DEM:

1. Draw your cross sections using the Tuflow 1d_xs file, be sure to fill in the source column.

2. Install the QGIS plug-in "profile from line" (note you may also need to install shapely - see [http://osgeo-org.1560.n6.nabble.com/plugin-profile-from-line-td4133320.html]).

3. Run the plugin, it is pretty self explanatory, select your cross sections and dem, choose a suitable sampling interval.

4. Upon running the plugin, QGIGS will add a new points file to the workspace, save this as a .csv. This file will contain the source of every cross section as well as the corresponding chainages and elevations.

5. To split this data into individual .csv files in a format that tuflow can read in, download [[File:XSExtractor.xls]]

6. Follow the instructions in the spreadsheet, after exporting to individual worksheets use the Tuflow "Export Entire Workbook to csv" to obtain all the cross sections in a tuflow format.

Done!

TUFLOW Message 0314

2012-05-02T02:26:13Z

Ben Throssell:

{{TUFLOW_Message
|tuflow_message=WARNING 0314 - Problems reading number of attributes in .mif file
|alt_msg=NA
|type=[[WARNING]]
|message_desc=????
|suggestions= When using QGIS, exporting the shp file again works, or exporting to a mif also seems to work.
|discussion_page=* [[Talk:TUFLOW Message 0314|Discuss Message 0314]]
|link3=''
|link4=''
|prelink=[[TUFLOW_Message_0313|Message 0313]]
|uplink=[[0xxx_TUFLOW_Messages|0xxx Messages]]
|nextlink=[[TUFLOW_Message_0315|Message 0315]]
}}

Talk:QGIS Tips

2012-04-03T01:02:35Z

Ben Throssell: /* Extract Cross-Sections/Elevations from 2-D Domain to .csv format */ new section

How to Update a Column (Equivalent of MapInfo Update Column)

To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries

1. Open Attribute Table

2. Select all CN attributes, this can be achieved if you sort by type so that all CN attributes are grouped,alternatively, for more complex situations, use the Advanced Search tool in the bottom right. This allows you to select using an SQL Query

3. From the attribute table, open the field calculator (you need to be editing to open the field calculator)

4. Ensure that "Only update selected features" is turned on, and set the "Update existing field" to "f"

5. Type "1" into the "Field calculator expression" box and hit "OK". Note, if you want to insert a string such as 'S' you need to enter it with the inverted comma.

[[File:FieldCalculator.jpg]]

Done!

You can also use the field calculator for more advanced tasks, for example when naming the Source attribute for XS, the expression

'XSName'||rownum*50-50||'.csv'

will generate in the source column:

XSName0.csv

XSName50.csv ...etc

== Extract Cross-Sections/Elevations from 2-D Domain to .csv format ==

To use QGIS to extract cross sections from your DEM:

1. Draw your cross sections using the Tuflow 1d_xs file, be sure to fill in the source column.

2. Install the QGIS plug-in "profile from line" (note you may also need to install shapely - see [http://osgeo-org.1560.n6.nabble.com/plugin-profile-from-line-td4133320.html]).

3. Run the plugin, it is pretty self explanatory, select your cross sections and dem, choose a suitable sampling interval.

4. Upon running the plugin, QGIGS will add a new points file to the workspace, save this as a .csv. This file will contain the source of every cross section as well as the corresponding chainages and elevations.

5. To split this data into individual .csv files in a format that tuflow can read in, download [[File:XSExtractor.xls]]

6. Follow the instructions in the spreadsheet, after exporting to individual worksheets use the Tuflow "Export Entire Workbook to csv" to obtain all the cross sections in a tuflow format.

Done!

File:XSExtractor.xls

2012-04-03T00:58:48Z

Ben Throssell: uploaded a new version of "File:XSExtractor.xls"

Tool for extracting cross sections from QGIS format

File:XSExtractor.xls

2012-04-03T00:44:58Z

Ben Throssell: Tool for extracting cross sections from QGIS format

Tool for extracting cross sections from QGIS format

Talk:QGIS Tips

2012-03-30T04:36:44Z

Ben Throssell: Created page with "How to Update a Column (Equivalent of MapInfo Update Column) To quickly enter the "f" (multiplication factor applied to the boundary values) attribute for all CN type boundaries..."

File:FieldCalculator.jpg

2012-03-30T04:21:49Z

Ben Throssell: