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Jan
27
comment Calculating percentages in ArcGIS field calculator gives TypeError: 'float' object is not iterable?
In python, sum only works with iterables such as lists and tuples. I'm assuming Count is a float. Do you want to sum all of the Count values in the the attribute table? If so, you will probably need a search cursor and store the value in a variable called "TotalCount" or something like that. There are plenty of posts on this site about search cursors. Alternatively, you could get the total beforehand and just divide by that number.
Jan
25
comment NDVI colour scheme for ArcGIS
A Google Image search of "NDVI Map" yields many different results. From shades of green and brown to all the colours of the rainbow. So, I don't think there is a standard colour scheme. However, I think shades of green make the most sense.
Jan
19
comment If else if in ArcMap Field Calculator (Python)
I think this is the best solution. Switch statement (or in this case, a dictionary), is the right call.
Jan
19
comment Using FeatureClassToFeatureClass from list to concatenated list?
@Stu, please accept the answer if it worked for you.
Jan
19
comment Using FeatureClassToFeatureClass from list to concatenated list?
I haven't tested it. But that's what I always use. I've had issues in the past with this. Just looked at the documentation, however, and it appears you're right.
Jan
17
comment Extract from raster by tightest rectangle mask without Nodata
Screenshot is broken again. Perhaps re-edit and upload to the site rather than hosting it somewhere else.
Jan
13
comment Raster calculator con statement not working in ModelBuilder in ArcGIS 10.3
Can you please post a screenshot of your model?
Jan
10
comment Using a length attribute and a start coordinate to get the end coordinate on a vector in FME
Is it possible that the road will turn within that length attribute? Or is it always a straight distance? For example, say you have a road that is 1000m. And your starting point is 250m and your length is 500m so your end point is 750m along the road. However, what if there is a turn at the midpoint? You still need the end point on the road, and a straight line wouldn't work. I may have a solution for you but I need a bit more information.
Jan
8
comment Changing chart properties, ArcMap 10.3 Desktop
Right click on the chart. Click on advanced properties. You can adjust just about every aspect of the chart.
Dec
17
comment Creating a map with custom icons
What software are you using?
Dec
17
comment FME Timer function?
Can I ask why you need this functionality?
Dec
16
comment How to do spatial join in FME by preferring points with same attribute
This can easily be done using lists. Define a list in the "Close Candidate List Name". That will store all the neighbours in a list. You can use a ListElementCounter for that.
Dec
9
comment Creating an .mxd Thumbnail JPEG
I don't know that you can do that. Why not just export a jpg of the map layout?
Dec
9
comment Label is appearing two times for some areas. How i can solve the problem, label should be shown one time for one area
Also, have you checked that you don't have the same layer added in your Table of Contents more than once? It happens...
Nov
23
comment List Attribute values selected by location
Have you tried anything yet? Try looking into the lineOnarea transformer. Or the spatial filter.
Nov
18
comment Sequential attribute field calculations with null values using Arcpy
Also, converting these points into polygons should be posted as a separate question, however, I believe you'll find answers to that on this site already.
Nov
18
comment Sequential attribute field calculations with null values using Arcpy
I think you'd have more success using an Update Cursor rather than using the field calculator. Keep a running count and if you encounter a null value, don't update the field, but increase your count. When you hit the next row with a value, update with that count number and so on.
Nov
18
comment FME autoincrement id is not recognized
It appears that there are null values in your ID field where there shouldn't be. Have you checked the ID field in the shapefile that there are indeed no missing values?
Nov
17
comment Copying point features along line features by predetermined distance
I always like your answers. I had forgotten about the measureOnLine and positionAlongLine methods.
Nov
17
comment Copying point features along line features by predetermined distance
Most GIS programs have Linear Referencing tools which will create Events along a route. In ArcGIS, I suggest you have a look at the Linear Referencing toolbox. There are plenty of posts on this site relating to similar tasks.