View source for TUFLOW Message 2333

{{TUFLOW_Message
|tuflow_message=ERROR 2333 - Insufficient header information in external grid file.  Check format of file.
|alt_msg=ERROR 2333 - Insufficient header information in ASCII grid file.  Check format of file.<br>
ERROR 2333 - Reading rainfall grid file <filename>
|type=[[ERROR]]
|message_desc=This message indicates that the grid file is not in the recognised formats which are:<br>
'''ESRI ASCII grid ''' - this format usually has the extension .asc or .txt and is a plain text file (not binary) and can be opened in a text editor.  At the top of the file, information on the size of the grid, the cell size and coordinates should be displayed.  An example is below:<br>
<tt>
ncols         2284<br>
nrows         3916<br>
xllcorner     0.0<br>
yllcorner     0.0<br>
cellsize      5.0<br>
NODATA_value  -9999<br></tt>
After the header information should follow the ncols x nrows of data.  If the file is not in a similar format to the above, the file is most likely not in the correct format.<br>
'''BINARY grids (.flt format)''' - this format is a binary version of the above .asc.  It is comprised of two files .hdr which is plain text and contains the information listed above and .flt which contains the grid data.
|suggestions=Open the .asc or .hdr file in a text editor to ensure that the file is in the correct format.  If not, this may need to be re-exported from your GIS package.  Instructions for doing so in command GIS packages are below:<br>
*<u>[[VM_Export_to_ASC| MapInfo with Vertical Mapper]]</u>
*<u>[[Arc_Export_Raster_to_asc|ArcMap]]</u>
*<u>[[QGIS_Export_Raster_to_asc|QGIS]]</u>
<br>
Ensure that the <tt><font color="blue">Read GRID</font></tt> command is only used for gridded data.  For GIS data in ESRI Shapefile or MapInfo MIF format, the <tt><font color="blue">Read GIS</font></tt> command is required instead.

|uplink=[[2xxx_TUFLOW_Messages|2xxx Messages]]
}}