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4

To check out the extension outside of ArcGIS, add this line at the beginning of the script, after the import statements. arcpy.CheckOutExtension("Spatial")


3

The problem was that I had run out of space to write to disk, and the map algebra commands I was using were attempting to generate and write large temporary raster files.


2

Try the following workflow: Reclassify your rasters so that Value = 1. Calculate Cell Statistics using a "SUM" statistic. Any value in the resulting raster > 1 is an overlap area. Additionally, the value of the resulting raster indicates how many overlapping rasters there are.


2

If you want every cell that contains a building to be switched on then don't use the polygons... Create centroids using Feature to Point for the polygons and use Point to Raster to generate the raster. This will guarantee that each cell that has a building centre on it will have a value. Optionally, if you want cells that contain part of a building but not ...


1

The ETOPO1 dataset merges topography and bathymetry in one elevation model. Quoting the home page: ETOPO1 is a 1 arc-minute global relief model of Earth's surface that integrates land topography and ocean bathymetry. It was built from numerous global and regional data sets, and is available in "Ice Surface" (top of Antarctic and Greenland ice ...


1

Looks like the cell assignment method is CELL_CENTER (so polygon would need to be located over the cell center to be digitized). Using MAXIMUM_AREA will capture more of the polygons, although possibly not all since the cell size is so much larger relative to the polygons. You might get closer to the results you want if you first make a Minimum Bounding ...


1

sounds like your cell size and units for input/output might be different - make sure they match exactly in your environment settings, otherwise the software might be filling in the gaps with interpolated values, creating a muddy look


1

There are two different ways that Tiles can be addressed, the TMS standard specifies that tile coordinates start at the bottom left, but in practice most software is using a coordinate system with the Y axis reversed from TMS: it starts at the top left instead of the bottom right. I don't know that there is really an official name for this scheme, some ...


1

Option 1 You have discovered one option - adding 255 to the "Additional No Value" in Layer Properties/Transparency. Option 2 Another option is to use a VRT, define 255 as the source nodata value and define 0 as the VRT no data value using gdalbuildvrt. For example: gdalbuildvrt -srcnodata 255 -vrtnodata 0 out.vrt in.tif To do this on all tiffs in a ...


1

To start with, make a tileindex shapefile of your images with the gdaltindex utility. Edit the shapefile by adding new columns for your metadata like to which layer each image belongs to. Add the shapefile into your project and query it with the identify tool for finding the image metadata.


1

The formula for global Moran's I is: where i is an index of analysis units (basically, measurement units of of your map, or in your case pixels in the raster) and j is an index of the neighbors of each map unit. The formula for local Moran's I is extremely similar, except that since local Moran's I is calculated separately for each analysis unit indexed ...


1

It sounds like the asker was able to answer their own question, but did so through an edit to the question. The solution was to use the Zonal Statistics as Table tool from the Zonal toolset of the Spatial Analyst toolbox. A link to the ArcGIS Resource Center article is here. The option for ALL was chosen for the Statistics Type.



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