topic Re: arcpy.mapping.ExportToTIFF full georeferenced export problem in Python Questions

arcpy.mapping.ExportToTIFF full georeferenced export problem

JelmerOosthoek — Fri, 11 Nov 2011 14:02:00 GMT

Hello,

I have two raster layers in my TOC of which the top one is semitransparent. They have the same size and extent. I would like to export this combined 'map' in it's full resolution.

My first attempt uses File > Export Map. First I set the Dataframe width to be the rasters width. Next in Export Map I increase the DPI until the exported image width is around the width of the rasters. When I export ArcGIS 10 SP3 crashes. This has worked for me with ArcGIS 9.3.

The second attempt is using python:
import arcpy
mxd = arcpy.mapping.MapDocument("mymxd.mxd")
outTIFFpath = "out.tif"
df = arcpy.mapping.ListDataFrames(mxd, "Layers")[0]
arcpy.mapping.ExportToTIFF(mxd, outTIFFpath, df, df_export_width=46070, df_export_height=28126, resolution=2642, world_file=True, geoTIFF_tags=True)

(the width of the rasters is 46080 and 46070 here is the best approximation I can get)

The problem here is that the exported TIFF isn't correctly georeferenced. The resulting map is mostly white 'nodata' around the raster. How can I make sure the MapDocument goes to full extent before I export?

Kind regards,

Jelmer Oosthoek

Re: arcpy.mapping.ExportToTIFF full georeferenced export problem

AndrewChapkowski — Fri, 10 Dec 2021 23:38:50 GMT

Jelmer,

The reason you are seeing all the white space in your tiff is because you are exporting the page layout, not the actual tiff. Try specifying your data frame and try it again.

Help document: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00s300000009000000

Example:

import arcpy
mxd = arcpy.mapping.MapDocument(r"C:\Project\Project.mxd")
df = arcpy.mapping.ListDataFrames(mxd, "Transportation")[0]
arcpy.mapping.ExportToTIFF(mxd, r"C:\Project\Output\ProjectDataFrame.tif", df,
                           df_export_width=1600,
                           df_export_height=1200,
                           geoTIFF_tags=True)
del mxd

Re: arcpy.mapping.ExportToTIFF full georeferenced export problem

JeffBarrette — Fri, 10 Dec 2021 23:38:53 GMT

How can I make sure the MapDocument goes to full extent before I export?

Have you tried something like:

mxd = arcpy.mapping.MapDocument(PathToMXD)
df = arcpy.mapping.ListDataFrames(mxd, "myDataFrame")[0]
lyr = arcpy.mapping.ListLayers(mxd, "myRasterLayer")[0]
df.extent = lyr.getExtent()

Jeff

Re: arcpy.mapping.ExportToTIFF full georeferenced export problem

JelmerOosthoek — Thu, 24 Nov 2011 09:35:44 GMT

Hi Jeff,

I added the code you suggested but then ArcMap 10 crashes...

Jelmer

Re: arcpy.mapping.ExportToTIFF full georeferenced export problem

JeffBarrette — Mon, 28 Nov 2011 13:33:13 GMT

There is obviously something wrong. It must have something to do with your MXD and/or data. I recommend that you submit this to support services so we can evaluate the problem.

Jeff

Re: arcpy.mapping.ExportToTIFF full georeferenced export problem

DavidRahe — Fri, 02 Mar 2012 12:07:12 GMT

I have a similar Problem,
I tried exporting a geoTIFF series via Data driven pages, but the TIFFs are noch georeferenced correctly.
If I Mosaic them together I get doubles.

I exported it vial Python using this script:

mxd = arcpy.mapping.MapDocument("CURRENT")
df = arcpy.mapping.ListDataFrames(mxd)[0]
for pageNum in range(1, mxd.dataDrivenPages.pageCount + 1):
mxd.dataDrivenPages.currentPageID = pageNum
arcpy.mapping.ExportToTIFF(mxd, r"C:\Projects\Test\page" + str(pageNum) + ".tif", data_frame=df, geoTIFF_tags=True)
del mxd
del df

maybe someone has a good idea.
greetings

David