New answers tagged classification
The LAS Dataset toolbar in ArcMap does not provide any automated classification solutions. The classification that is available through the Profile viewer was meant solely for the facilitation of supervised classification, where you would make a selection and assign the appropriate class code. In ArcGIS Desktop 10.4 and ArcGIS Pro 1.2, 3D Analyst provides ...
One of the problems with thresholding is that there really is no good way to automate the optimization of a threshold value. There are several reasons for this. When it comes to extracting features of interest, such as urban areas, there will be error no matter which threshold value you choose. If you select a value too high, classes start merging--to low ...
Slightly modified and faster field calculator expression using enumerate to populate new integer field: breaks=[-67.7,-46.7,-17.1,21,100] def Get_Class(x): for i,v in enumerate(breaks): if v >= x:break return i+1 '------------------------------------------ Get_Class(!ROTATION!)
Agreeing with whatahitson's answer - use selections and the field calculator. To elaborate: Add a field to the data table of your polygons layer. Since you've already calculated the breaks, then use the Select by Attributes tool under the Selection menu to select the polygons with values in between two breaks. Then, with these polygons still selected, ...
You don't mention Python, arcpy, or any coding in your tags, so I would assume that you're limited to working in ArcMap; is that correct? I have a Python/ArcPy function that creates Thiessen polygons on the vertices of each polygon, which mostly yields the results that you're looking for. The steps are basically: 1) Delete all extraneous fields (as step 3 ...
I think the key is to make sure both: Map has 'lock layers for map item' and 'lock layer styles for map item' checked Legend has 'Auto-update' unchecked Here is a print composer where the top (pink) map is set as described above, and the 2nd map is being drawn from the same layer as the 1st map:
At least in QGIS 2.12 this can be done by setting what map to populate the legend from in the legen item properties. In the Map dropdown box.
I came across this example in ENVI's documentation which does exactly what I was looking for in IDL: http://www.exelisvis.com/docs/enviclassificationaggregationtask.html.
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