1,636 reputation
831
bio website nowebsite
location planet earth
age 94
visits member for 3 years
seen Dec 3 at 8:33

trying to survive a phd


Apr
17
comment Populating fields in a Matrix format
you matrix looks like a change analysis between two rasters. is this what you want to do ?
Apr
10
comment Mapping between two different agencies roadway shapefiles of Las Vegas in ArcGIS
we need some extra info: coordinate system of each shape file, extent, did you download this files (if yes, from where).
Apr
9
comment Why does Field Calculator return 0 values when decimals are expected?
question that year sago solved many problems with arcgis calculations: what is your windows format (region and Language in Control Panel) ?? did anyone by mistake changed the Numbers format (open additional settings and 2-check the Numbers formats). I hope it helps
Apr
8
comment Printing a map with GPS points
what softwares do you have installed in your computer?
Apr
7
comment Why does Field Calculator return 0 values when decimals are expected?
Can you add to your post the properties of each input and output field (type) ?
Apr
6
comment Retrieve speed and number of Lanes in Google Maps API, OSM data or any other stream?
from the OSM website (openstreetmap.org) you can always export the area of interest in XML and take out the info on the type of road and speed limit. but i am not sure this is how you want to do this.
Apr
5
comment Is there a way to improve the render quality of ESRI basemaps when exporting a map to PDF or JPG?
try the PNG format. If the problem continues, export your map by layers and overlay them in GIMP.
Apr
5
comment Why Stacking rasters return all values as NAs?
why are you doing 2 times stack ?
Apr
5
comment Searching Pixel Location (idrisi) on Another GIS
you need a raster or you need to access that kind of information??
Apr
5
comment Problem to clip a raster with a shapefile
what is your raster resolution? what are the dimensions of your vector layer?
Feb
26
comment how can i plot news stories to show how many stories include each country on a map of the world
well you need to have georef data, at least your spread cheet needs to have the country identification. you wil need to join this spreadsheet to a world country shape file by country id. you should eb able to do this in QGIS
Feb
6
comment Machine Learning Algorithms for Land Classification
(+1) This is great! thanks for sharing
Feb
4
comment Mercator projection that shrinks toward pole
you shouldn't crosspost in all possible sites/mailing list's... it is not a correct approach: 1 & 2
Jan
30
comment MODIS image reprojection/ change coordinate system in ArcGIS 9.3
show us both files properties. In ArcMap, right click over each file, Properties - > Source (for the shapefile) and Properties - > Source -> scroll down until you can see both extent and coordinate system .
Jan
26
comment Displaying transparent overlapping polygons in ArcGIS for Desktop?
not sure if i understand exactly what you need, but maybe you need to extract your polygons to individual shape files in order to be able to overlay them and create the effect you want, for this you can use the Split tool (Analysis Tools -> Split).
Jan
25
comment Calculating a projected distance
what are you working with?? rasters or shapefiles ??
Jan
25
comment Inverse distance weighted interpolation for categorical and/or binary datasets
@Spacedman yes indeed there are some other red points that are not visible from the grey point, therefore can't be used. The drawing was just to give an idea of what I am looking for. The grey parallel lines indicate areas that can't be used in the interpolation, because they are not visible from the grey point (e.g. behind a barrier or on top of a barrier, the barrier can be for example a mountain)
Jan
24
comment Looking for Fortran code calculating drainage basin area
Check HEC-RAS.
Jan
17
comment Mosaic large dataset with R
my advise is: don't even try to do it in R ! you can't mosaic 20 files with 1Gb each in R, without facing 999999999 diferent problems,
Jan
17
comment Is PhD in GIS useful in non-educational career path?
Although it doesn't fall in GIS stack exchange scope, is has many votes. :)