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Mosaic a list of grids fails arcpy - Solved

Question asked by ranleu on Oct 20, 2014
Latest reply on Oct 21, 2014 by ranleu

Hi, I am trying to mosaic a list of grids with arcpy.MosaicToNewRaster_management but keep getting a series of errors, no matter what I try. My problem seems to lie on the input rasters. Since I need to mosaic a series of grids, then the input becomes a multi value input, thus I have tried the three ways suggested by ArcGIS Desktop . Yes I am working with ArcGis 10.0

 

So, first thing with Python List:

ERROR 000157: Input and target dataset should have the same number of bands

Whith following code:

 

dem_list = ["path1\\grid1;path2\\grid2"]

arcpy.MosaicToNewRaster_management(dem_list, target_gdb, "mos_wat", varGeo_SpatRef, "32_BIT_FLOAT", "", "1", "MEAN", "REJECT")

 

Now, with Value Table

ERROR 000732: Input Rasters: Dataset F:\FLOODS_USA\A_FLOODS\DEM_SRTM\ADEM_10mUSA_Neue\n25w081\grdn25w081_13;F:\FLOODS_USA\A_FLOODS\DEM_SRTM\ADEM_10mUSA_Neue\n25w081\grdn25w082_13 does not exist or is not supported

Whith following code:

 

dem1 = "path1\\grid1"

dem2 = "path2\\grid2"

vt = arcpy.ValueTable(1)

vt.addRow(dem1)

vt.addRow(dem2)

arcpy.MosaicToNewRaster_management(vt, a_gdb, "mos_wat", varGeo_SpatRef, "32_BIT_FLOAT", "", "1", "MEAN", "REJECT")

 

Finally with String

ERROR 000157: Input and target dataset should have the same number of bands

Whith following code:

 

dem_list = "path1\\grid1;path2\\grid2"

arcpy.MosaicToNewRaster_management(dem_list, target_gdb, "mos_wat", varGeo_SpatRef, "32_BIT_FLOAT", "", "1", "MEAN", "REJECT")

 

For all three cases, if I print the input variable it seems to be in the correct format as bellow

path1\grid1;path2\grid2

 

I have also tried wraping it in quotes as to have

"path1\grid1;path2\grid2"

 

and I get the same problem. I have of course searched for answers here and somewhere else, and I find no definitive answer to it, since everything points to what I have already tried without success. I would appreciate any help here. By the way: paths, bands, type and projection are all OK.

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