2,588 reputation
721
bio website github.com/jlaura
location Flagstaff, AZ
age 31
visits member for 3 years, 4 months
seen yesterday

I am a geography Ph.D. student at Arizona State University, with interests in FOSS, big data, spatial algorithm implementation in python, visualization, the application of cartographic techniques / spatial analysis to planetary data (Moon, Mars, Titan, etc.), and remote sensing.

My primary research focuses are in the geocomputation domain.


Jun
3
awarded  Enlightened
Jun
3
awarded  Nice Answer
May
9
comment ArcPy in_memory\ vanishing from ToC
updated - can you update your answer with the datatypes you are passing in? It amazes me that this works in 10.2 and fails in 10.1.
May
9
revised ArcPy in_memory\ vanishing from ToC
added 124 characters in body
May
9
comment ArcPy in_memory\ vanishing from ToC
Using: res = arcpy.PolygonToRaster_conversion(roi,abundance,rasterized,"MAXIMUM_AREA","",cell‌​size) had no effect. Replacing "MAXIMUM_AREA" with "" also had no effect.
May
9
revised ArcPy in_memory\ vanishing from ToC
added 312 characters in body
May
9
asked ArcPy in_memory\ vanishing from ToC
May
8
reviewed Reject suggested edit on QGIS display does not reflect projection
Apr
25
comment create polygon adjacency matrix using python
How about using PySAL? This functionality already exists. You want Rook contiguity. Is the data a lattice? pysal.org/library/weights/weights.html
Apr
15
awarded  Yearling
Jan
28
comment ArcMap Natural Breaks Classification
'You can find the pseudocode here: resources.arcgis.com/content/…; Any insight here? The implementation issues that the post documents exist across variance based classification methods. They are not specific to Fisher-Jenks, nor is the info from Charlie more insightful that going to the original papers that document the algorithm. I appreciate the link, but it offers no more information than either the original work or a few hours spent implementing the algorithm.
Jan
27
comment ArcMap Natural Breaks Classification
Thanks for the info. The link you posted is the one I originally linked to as well. The poster specifically states that this is an ESRI version of Fisher-Jenks. I wonder if any additional information is available - the hand waving in the linked info does not speak to the specific alterations.
Jan
27
awarded  Cleanup
Jan
27
revised ArcMap Natural Breaks Classification
rolled back to a previous revision
Jan
27
revised ArcMap Natural Breaks Classification
rolled back to a previous revision
Jan
25
comment Unusual results for geoprocessing speed tests
@Aaron how about running the command line scripts as time python script. What is the difference between user + sys and real? If it is quite large, then the time may be I/O related.
Jan
25
comment Unusual results for geoprocessing speed tests
How about the fact that IDLE is also having to get a file pointer? The Arc script might already have the file pointer and/or have the geometries memory mapped.
Jan
24
asked ArcMap Natural Breaks Classification
Jan
4
reviewed Approve suggested edit on Is there a way to convert multiple columns at once from string to text, or to other data formats?
Jan
4
comment SpatialLite BulkLoad and Merge
Thanks for the heads up and bummed that I missed that post. I did see references to using transactions to bulk insert. This might be the first avenue that I explore as the data is nicely portioned into shapefiles already.