Difference between revisions of "Check Files 2d zsh zpt"
m |
m |
||
| Line 14: | Line 14: | ||
|} | |} | ||
| − | '''Note: ''' | + | '''Note: ''' More than one Z shape layer can modify the same elevation point. For example if two breaklines are applied which intersect then the later occurrence in the geometry control file is given preference. Multiple objects within a GIS layer, may also modify the same elevation point (zpt), for example overlapping polygons. In the _zsh_zpt check file all modifications by 2D Z Shape layers are reported. The final elevations are reported in the [[Check_Files_2d_zpt | 2d_zpt check file]]. |
For MapInfo users this layer has a symbology applied, into three styles: | For MapInfo users this layer has a symbology applied, into three styles: | ||
Revision as of 08:34, 2 December 2016
The _2d_zsh_zpt.mif or _2d_zsh_zpt_P.shp is only created if a "Read GIS Z Shape ==" command has been specified in the model. This file contains information on all the elevations points (zpts) that have been altered by the Read GIS Z Shape commands.
Attributes of _zsh_zpt check file
| Attribute Name | Attribute Description |
|---|---|
| dz | The amount by which the elevation has been changed by the Z Shape. A positive value indicates that the elevation has been increased by the GIS layer and a negative value indicates that the elevation has been lowered. For example a value of 0.3 would indicate that elevation point has been raised by 0.3 (metres or feet if running in US Customary units.) |
| Elevation | The elevation after the zpt has been modified. |
| Source | The path to the GIS layer which has caused the elevation point to be modified. |
Note: More than one Z shape layer can modify the same elevation point. For example if two breaklines are applied which intersect then the later occurrence in the geometry control file is given preference. Multiple objects within a GIS layer, may also modify the same elevation point (zpt), for example overlapping polygons. In the _zsh_zpt check file all modifications by 2D Z Shape layers are reported. The final elevations are reported in the 2d_zpt check file.
For MapInfo users this layer has a symbology applied, into three styles:
- A grey cross indicates that no change has occurred (for example a Z Shape with the option "Max" which is below the existing elevation)
- A yellow triangle pointing down indicates that the zpt has been lowered
- A pink triangle pointing up indicates that the zpt has been raised
These can be seen in the image below:
