967 reputation
316
bio website
location
age
visits member for 2 years, 1 month
seen 2 days ago

Apr
18
comment Can a new point automatically be populated with data from the containing polygon
The solution is basen on exercise from PennState: e-education.psu.edu/geog485/node/159. Moreover, On the first place I proposed two ArcGIS tools which do not require any scripting!
Apr
17
answered Can a new point automatically be populated with data from the containing polygon
Apr
17
comment Can a new point automatically be populated with data from the containing polygon
@Hairy: Your script updates a polygon layer not points. The geom variable wont be created as you don't have access to X,Y directly. Use geom = row.Shape.getPart() instead. Moreover, the script may not be effective while many polygon as it loops through all polygons for each point.
Apr
15
comment How to Clip a Vector File based on certain Raster Values?
My first thought was also CON tool. But in my created Slope rasters this tool didn't recognise VALUE field. That's why I recommended Reclassify tool. BTW the real problem here is not HOW, but operations on huge vector layers.
Apr
13
awarded  Critic
Apr
12
awarded  Commentator
Apr
12
comment How to Clip a Vector File based on certain Raster Values?
Have you seen gis.stackexchange.com/questions/16110/… for some hints on handling big rasters and vectors?
Apr
12
comment How to Clip a Vector File based on certain Raster Values?
What do you mean '"Clip" crashes'? Does it throw any errors or ArcMap is in No response state?
Apr
12
comment How to Clip a Vector File based on certain Raster Values?
When converting raster to polygon, select option 'Simplify polygons' - this reduce the number of polygon vertices. Moreover, try to do your analyse in File Geodatabase.
Apr
12
answered How to Clip a Vector File based on certain Raster Values?
Apr
12
answered Small issue with field calculator
Apr
10
comment Looking for system specifications for a modern GIS workstation
In case of ESRI software, it's better to have higher cpu frequency than additional cores.
Mar
15
comment slope and mosaic datasets
You don't need to update overviews for slope calculations. When you still get wrong values try to create 'traditional' mosaic from your rasters: Data Management Tools -> Raster -> Raster Dataset -> Mosaic
Mar
15
comment slope and mosaic datasets
Try creating new Mosaic Dataset, set Pixel Type 16_BIT_SIGNED (this should cover all elevations). Then again Add Rasters with Calculate Statistics advanced option checked. Check in ArcMap if you have correct elevations.
Mar
14
awarded  Scholar
Mar
14
accepted How to create multipart line and polygon with interior ring in ArcGIS Python?
Mar
14
answered How to create multipart line and polygon with interior ring in ArcGIS Python?
Mar
14
awarded  Editor
Mar
14
revised How to create multipart line and polygon with interior ring in ArcGIS Python?
added 342 characters in body; edited tags; edited title
Mar
12
awarded  Analytical