A spatial operation in which two or more maps or layers registered to a common coordinate system are superimposed, either digitally or on a transparent material, for the purpose of showing the relationships between features that occupy the same geographic space.
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223 views
Is Tile same as Layer?
Is there difference between a tile server or a layer server?
Can I load tile in ArcGIS control in WPF from some other source?
Can I host my own layer server? Or is there any such thing as layer ...
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1answer
100 views
Summarize polygon area using another polygon
I have a shapefile representing public/private lands in Montana. This is a multipart shapefile where I've simplified attributes so that #1==private and #0==public.
Next I have a shapefile of ...
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1answer
154 views
How can I move diagrams?
Is there a way to locate diagrams and move them wherever you want in QGIS 1.7.4/ 1.8.0?
I created a pie chart under the tab "diagram". I can mark those diagrams with a green box and move them via the ...
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1answer
309 views
Text ShapeFile not displaying ArcGIS/ArcMap
I currently am trying to load different shp files in ArcObjects progromatically. Currently I can load lines,polylines, polygons and ellipses (even though that's just a fancy polygon as far as ...
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0answers
23 views
GRASS v.overlay.or Error when trying to split a polygon with a line
I am using the Grass plugin in QGIS for Windows (1.8.0). I am trying to split a polygon with a line feature. I am using the v.overlay.or function within the QGIS Grass plugin. I have the line layer ...
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2answers
45 views
Calc vs. Overlay for speeding up band math in R 'raster' package?
Regarding yesterday's question about how to speed up band math in the R 'raster' package, would it be the same to use overlay to calculate NDVI instead of calc? If that's not the case, what's the ...
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1answer
83 views
ArcMap 10.1 Spatial Join: 'Contains' and 'Within' question
I have two polygon datasets: electoral districts and postal code areas. I'm performing a spatial join to see which postal code areas are completely within a district (the area can touch the borders, ...
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1answer
35 views
Stamp out and transfer values from one overlayed vector layer to another
I have a vector layer with administrative boundaries and another vector layer with postal code boundaries, which are more precise/smaller entities/objects.
I now want to transmit the values of one ...
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0answers
133 views
Raster Over Layer in Leaflet from GeoServer
I want to add a raster over layer onto the base layer and the raster layer is published by a Geoserver WMS. I set the raster layer's geographic coordinate system as the same as the cloudmate tiles. ...
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0answers
212 views
Zipcode overlay on OSM
I have to display an overlay with different colors depending on the zipcode in Europe.
Can I get this information from OSM shapefile ? If yes, how exaclty ? Is there a tutorial somewhere ?
Thanks
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1answer
263 views
Merge two maps with OR operation in GRASS
I have two vector maps. The two maps cover the same area but are split up into polygons differently (i.e. if you were to imagine one map placed above the other, the lines defining the polygons would ...
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1answer
620 views
Creating a Google Maps GroundOverlay with UTM NAD83 data
Edit4: The solution I posted from Jenner at VBforums was, obviously, in VB, and I used an online converter to port it to C#. Something was lost in translations, and that's why it was 10 miles off.
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1answer
119 views
I am looking for a library or API to do vector overlay for two map layer (shapefiles or GML files)
I need to perform vector overlay operation on any two map layers as ArcGIS and Grass GIS performs. I am wondering is there any API or library ( in C, C++ or Java) so that I can use that third party ...
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1answer
137 views
Does a polygon in a layer intersect with another polygon in the same layer [closed]
I am a CS major with little experience in GIS. I am working on vector polygon overlay. Looking at GML and shapefile data, I realized that a map is made up of a large number of polygons. Does a polygon ...
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1answer
80 views
overlay a county shapefiles for 2 different years [duplicate]
Possible Duplicate:
overlay county shapefiles for 2 different years
2 down vote favorite
I have county-level shapefile for South Caroline in 1880 and one for 1940. I would like to overlay ...
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1answer
1k views
How do I overlay a KML on leaflet 0.4.4
I am using Leaflet 0.4.4,
I have a KML I would like to overlay on the map, how do I go about doing this?
Edit: I am already aware of https://github.com/CloudMade/Leaflet/issues/14, which directs ...
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1answer
139 views
In leaflet does the addControl automatically handle events via the leaflet API?
I need to add additional overlay layers to be controlled by the controls within the leaflet map boundaries, but the code utilizes a leaflet-custom.js file. I am assuming it handles the event and ...
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90 views
Overlay shapefile data on the Map using Esri arcgis Javascript Api 3.0
Is there any way to overlay the shapefile data containing in the subfolder of the solution on to the map control of ESRI's Arcgis javascript api 3.0.Thank you in advance.
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126 views
Overlay polygon layer A over Polygon layer B
If I overlay postal codes (Zip Codes in US) over census tracts where postal codes are usually larger than census tracts, how can I get a table of what percentage of the area of the census tracts are ...
