msig0000 Posted March 5, 2012 Report Share Posted March 5, 2012 I m gonna to make report on the "solar energy potential of an area" for this purpose i need the all roof top area precisely, where from i can calculate the solar energy production capabilities of that particular area. under this state what should i do plz suggest Quote Link to comment Share on other sites More sharing options...
gisadept Posted March 5, 2012 Report Share Posted March 5, 2012 If you want to use Google Maps, I see no other way than digitize the roofs in your study area. I never used that services, but in ArcGIS you can load layers from webservers, in ERDAS you can connect to Bing Maps. It then boils down to draw polygons over areas of which you think these are roofs. NOTE I don't know what architectural style the houses in the study area fit in, but consider the fact that not all roofs are flat. If there are slanted roofs, the actual roof area will be higher. You measure the projected roof area. You can define it as a minimum solar panel potential. Quote Link to comment Share on other sites More sharing options...
3dbu Posted March 5, 2012 Report Share Posted March 5, 2012 you should classify the roof top using arcgis imagen classifier , download with google ozy study area and then make georeferensing the image and adjust to study area and then make a classification with arcgis or anothe soft of roof top...it's easy the process and wonder results...test and tell us...regards Quote Link to comment Share on other sites More sharing options...
msig0000 Posted March 6, 2012 Author Report Share Posted March 6, 2012 Using Google Earth or Maps What would be the precision level or how much correct it should be. Quote Link to comment Share on other sites More sharing options...
hariasa Posted March 18, 2012 Report Share Posted March 18, 2012 Using Google Earth or Maps What would be the precision level or how much correct it should be. Depends a lot on where you are on the globe. Some have very accurate LiDAR derived DEM's, but some areas just have SRTM data I believe. And you can always extract heights using stereo photography (eATA, LPS, although there are some issues involved). Quote Link to comment Share on other sites More sharing options...
msig0000 Posted March 19, 2012 Author Report Share Posted March 19, 2012 (edited) thanks Edited October 2, 2012 by msig0000 Quote Link to comment Share on other sites More sharing options...
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