New answers tagged clip
1
Couple of suggestions: run a check geometry tool on your layer that you wish to clip, you could then follow that up with a repair geometry if it finds errors. You may wish to do that on a backed up copy.
Are the corrdinate systems different? Are you trying to clip a dataset in decimal degrees with a dataset that is in meters or vice versa? If so reproject ...
1
QGIS uses gdal_translate utility to do the clipping. It is trivial to run gdal_translate from a shell script over files in a directory to clip all the rasters.
See this post for an example
http://linfiniti.com/2010/11/batch-clipping-with-gdal-and-bash/
To make things easier, you can use the Raster -> Extraction -> Clipper tool to select your parameters. ...
1
There has been a recent trend towards questions asking for an explanation of the differences between tools. If you're using ESRI products the ArcGIS Online Help should be your first stop.
You can find full explanations of each tool:
Intersect
Clip
In this case you will find that the Intersect tool will create output features which possess the attributes ...
3
The main difference will be in the attributes of the results. When using Clip only the input feature’s attributes will be in the output (none from the clip feature), where if you used Intersect the attributes form all features used will be in the output.
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Clip dataframe by shape is not supporting for MapService because of the performance. So the performance reason, you would better to clip the raster data source directly. I guess you have Spatial Analyst extension license, then you could use "Extract by Mask" tool.
http://resources.arcgis.com/en/help/main/10.1/index.html#//009z0000002n000000
Hope this help ...
0
Solved by simply checking "create output aplha band".
The reason of the message is because gdalwarp uses the byte type by default, so only 8bits are allowed for every pixel (values from 0 to 255).
you can use the -of Int16 option to extend the ranges, but it will increase the size of the raster and shift the colors (I suppose it's because of the resampling). ...
4
Almost any time you use cursors to manipulate geodatabase rows one by one, you should expect a slower process than if you can find a way to do the same thing but on larger selections. Compare the difference of, say, iterating through a point feature class containing 5000 points with a search cursor and buffering each one individually then merging the ...
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