5,961 reputation
11431
bio website geonet.esri.com/blogs/…
location Ottawa, Canada
age 61
visits member for 4 years, 7 months
seen 13 hours ago

Instructor Geomatics, Carleton University ON Canada


Mar
18
answered arcpy handling of floating points
Mar
18
comment arcpy handling of floating points
Use a spatial reference object, which I think pointgeometry supports, check the help. If a defined coordinate system is not used single precision is used in the calculations. References to this phenomenon are documented on this site and on geonet and a comment isn't the place to put them. No SR... = ... inaccurate results
Mar
15
comment ArcPy QueryPointAndDistance: Incorrect Lengths?
If a spatial reference isn't specified, you will get geometry errors. here is one example geonet.esri.com/thread/10256 You can specify it within the searchcursor as indicated in the help resources.arcgis.com/en/help/main/10.2/index.html#//…
Mar
1
comment Does GPS correct for continental drift?
I'm voting to close this question as off-topic because the person hasn't given the concept of continental drift and GPS precision and accuracy
Mar
1
comment Does GPS correct for continental drift?
how accurate is your GPS? :)
Feb
22
reviewed Approve How can I find GPS coordinates of the geographic center of US counties?
Feb
21
comment Exporting feature class into multiple feature classes based on field values using ArcGIS for Desktop?
yes the link is currently broken because ArcScripts 2.0 is being configured, It has been so long that I can't remember is it works on standalone tables, email if you want me to send you a copy. I am moving a lot of stuff over to NumPy and will have a new incarnation when ASv2 eventially appears
Jan
31
reviewed Approve Converting polyline data to polygons?
Jan
30
revised Difference between raster subsets as defined by another raster
clarification
Jan
30
comment Difference between raster subsets as defined by another raster
meant to post comment in the wrong section...too late to fix...in short...there is no correlation between nominal data, there may be an association...there is a difference, ask @whuber for commentary as to the distinctions
Jan
30
answered Difference between raster subsets as defined by another raster
Jan
28
comment Programmatically adding .shp file to .mxd file
try... arcpy.env.workspace = "C:/test/" ...with the extra / ... my example was just a sample...and obviously you dont have my data, so you will have to change them to reference your data...I was demonstrating what could be done. in that example, i had shapefiles stored in a folder relative to mxd_src which were used in the blank template mxd, from there symbology was applied using the lyr files and the mxd saved then ... with any luck arcmap was started with everything 'automagically' there
Jan
27
comment Difference between raster subsets as defined by another raster
search for nonparametric tests of association, Chi-Square, Mann-Whitney U etc will be some of the variants for the parametric tests list in several of the posts above. Also a good place to check is the Cross Validated site on Stack Exchange. That is the statistics data site in the stackexchange family
Jan
26
answered Plot shapefile with matplotlib
Jan
25
comment Plot shapefile with matplotlib
Not familiar with the shapefile reader, however I can tell that you are just appending all the points in the file to one big list without separating each shape into its component parts. You need a big list of shapes to which you append each shapes points
Jan
25
comment Longest Common Subsequence for trajectory matching in Python
Do you have a quick link to save people from looking it up, specifically the reference you were examining
Jan
25
answered Programmatically adding .shp file to .mxd file
Jan
18
reviewed Approve gdaladdo tag wiki excerpt
Jan
18
reviewed Approve gdaladdo tag wiki
Jan
18
comment How do I create a convex hull in ArcGIS Desktop?
The site appears to be in a state of flux...I will have to check on migrations within Geonet since I know they are ongoing. I will update when I find out...