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visits member for 1 year, 8 months
seen Mar 3 at 8:08

Jul
18
asked How to aggregate values multiple from multiple points along a route as an attribute of it?
Jul
10
asked Why does ArcGIS 10 Calibrate Routes give Error 000443?
Jul
2
comment Extract values using buffers - Equation
I am using ArcMap 10. I already have a buffer value for each point but I am having issues to extract raster data from those buffers. I have tried Zonal stats, GME and everything crashes :(
Jul
2
accepted interpolate point values to line
Jul
2
comment Extract values using buffers - Equation
Thank you so much for your help. Unfortunately when I use GME, some of my polygons are not attributed a logical value (e.g. -1.70000). Those problem points are random and I do not understand where the problem is. Zonal statistics is not working properly either. My buffers were created dissolved so it should not be because they overlap, but I have 2770 points and I get only 900 results if I extract values from a DEM with Zonal statistics as Table. Could it be because some buffers have a radius inferior to 30m and my rasters' cells are 30x30?
Jun
29
asked Extract values using buffers - Equation
Jun
29
comment interpolate point values to line
Thanks all for your answers. I have decided to keep it a little simplier and I will use the method described by Miro. :)
Jun
26
asked interpolate point values to line
Apr
15
comment How to extract values from intersection of different size buffers with raster?
Using arcMap or GME? Is it usually more efficient using polygon instead of raster?
Apr
15
asked How to extract values from intersection of different size buffers with raster?
Apr
15
comment Extract multi values to point error
Yes they are...
Apr
14
awarded  Commentator
Apr
14
comment Extract multi values to point error
Thank you! Now if instead of points I have buffers of different size, can I use this tool too? I tried using GME intersect polygon/raster but I get results as if I had no values everywhere on my raster...
Apr
13
asked Extract multi values to point error
Apr
10
awarded  Scholar
Apr
10
accepted Sorting points with QGIS
Apr
10
comment Sorting points with QGIS
Thank you very much Bernd V. Obviously it is going to be very time-consuming if I do everything myself. You are right, I should look for a programming approach. I did not put the whole data structure because I have tons of variables... I know that a change in vegetation is important but in this case there is too much risk for dependence between the counts and I want to be sure that I have only one count / day, assuming that groups stay cohesive ~24h. Thank you so much for your time and help!
Apr
8
comment Sorting points with QGIS
First, to sort them so that all points from the same date are detected by the software. Then, to remove duplicates and keeping only one count / day (randomly) if those counts happened to be within a 100m from each other... Taking a centroid measure would add a bias on the location and vegetation type related to the count. Am I being clear? :s
Apr
8
awarded  Student
Apr
7
comment Sorting points with QGIS
I tried a couple more times and it worked at my last trial... But it gives me polygones and I would like to only have my points sorted. Just the ones from the same date that are selected so that I can sort them...