Top new questions this week:

How do GPS/Glonass/Galileo satellite know their position?

We use satellites to calculate our position. How do satellites know their position if it is right or wrong ? I have heard that the base station records and corrects the satellite path but how do they …

gps

asked by Abhijit Gujar 9 votes answered by radouxju 8 votes

How to change the "W" (English) to "O"(French) on the North Arrow direction using ArcMAP 10.0?

How to change the "W" (English) to "O"(French) on the North Arrow direction using ArcMAP 10.0? I tried to convert the North Arrow sign to graphic but it didn't work.

arcgis-10.0 arcgis-desktop

asked by Doum 7 votes answered by DPierce 2 votes

Can I just swap out a .prj file to reproject a shape file?

I'm an experienced software developer -- but a GIS noob. I have a shape file that I am trying to turn into a SVG map with Kartograph. When I try to run Kartograph I get this error: ERROR 6: No …

shapefile projection coordinate-system

asked by akh2103 7 votes answered by mwalker 8 votes

Recommended programming language for remote sensing?

I am beginning studies that hopefully will lead to a long career as a remote sensing specialist. I am currently working with ArcGIS for some applications and learning ENVI for others. I have …

python remote-sensing idl

asked by Emily 6 votes answered by Jeffrey Evans 8 votes

How do I contact the developer of a QGIS plugin?

I want to give feedback to the developer of a non-core QGIS plugin. (Numerical Vertex Edit by Cedric Moeri, who seems to have no webpage for his plugins) I joined OSGeo Wiki but hardly know my way …

qgis

asked by IanS 5 votes answered by BradHards 5 votes

Easily calculate "roundness/compactness" of a polygon

I am trying to find ways to quantitatively describe the shapes of various polygons. For my project, these polygons represent lakes, rivers, lagoons, and parks. So they can be almost any shape. One …

arcgis-desktop arcgis-10.1 polygon

asked by user25201 4 votes answered by radouxju 5 votes

How to model money cost as an accumulator in network analysis?

This is not necessarily a technical coding question, although any links that include coding are welcome if they are answering my question. I am looking for research or analysis that has been done in …

arcgis-10.0 network-analyst cost-path

asked by Kotebiya 4 votes answered by SharonB 1 vote

Greatest hits from previous weeks:

What are Raster and Vector data in GIS and when to use?

What are raster and vector data in the GIS context? In general terms what applications, processes, or analysis are each suited for? (And not suited for!) In answering someone's question today, I …

raster vector learning

asked by matt wilkie 25 votes answered by Mapperz 19 votes

What are Esri's new "ArcGIS for Professionals" and "ArcGIS Professional"?

After looking through all the stuff that was released or talked about at the Esri UC I am still genuinely confused by what ArcGIS for Professionals is. I will admit that it looks pretty cool, and has …

arcgis-desktop arcmap arcgis-online arcgis-platform arcgis-professional

asked by Craig 31 votes answered by Jim McKinney 27 votes

Can you answer these?

How to Complete ModelBuilder Process Quicker?

I've built a script tool in ArcGIS's ModelBuilder to collect parameters from the user and use them as arguments for another python script. The output of this script is a text file. The only GIS …

python modelbuilder

asked by jdbam 2 votes

Setting global CSS and Javascript in .KML

I've tried googling this question, but I was wondering if it is possible to declare common styles (CSS) and Javascript functions that are being referenced within the tag of multiple placemarks?

javascript kml google-earth

asked by Elliott 1 vote

Contour tool in ArcGIS 10.1 giving syntax errors

I am trying to run the contour tool on a raster in 10.1 and get the following error messages? Does anyone know if this is a bug and is there a work around? ERROR 010328: Syntax error at or near …

arcgis-desktop arcgis-10.1 contour

asked by Tracey 1 vote