Latest Contributions by surendarmohan

This I am sure must be simple - till I find it! I have a map which I want to print in my report.  I need to print the coordinates of map corners only. I tried out graticule wizard where I can define graticule intervals, but how do I get only the corner coordinates? ... View more

I have boundary polygons created from Google Earth and then brought into ArcGIS. When I overlay these polygon boundaries over a correctly georeferenced Satellite image, it has an error of approximately 100 m which has been inherited from Google Earth's inaccuracy.  The issues of projection has been already correctly addressed. The polygon data is large, so digitising again is not an option. What can I do? ... View more

I have boundary polygons created from Google Earth and then brought into ArcGIS. When I overlay these polygon boundaries over a correctly georeferenced Satellite image, it has an error of approximately 100 m which has been inherited from Google Earth's inaccuracy.  The issues of projection has been already correctly addressed. The polygon data is large, so digitising again is not an option. What can I do? ... View more

Depth of flood in an area is changing with time. I have 15 rasters, having accurate depth values of flood on a each day - so total of 15 days. I am wanting to generate a raster which will provide the area under a curve if a Day-Depth graph were to be drawn using the 15 day dataset. Just to amplify - if I were to take all the 15 depth values for a given pixel and then make a graph of changing depth over time, then what whould be the area below the resulting curve. So the number of such graphs (and the resulting areas) would be equal to the number of pixels (that will makeup the new raster). How do I do it? ... View more

I have a large set of spatially distributed point data with certain values.  I need to reduce the number of points.  The basis of reduction is to identify points that are within a proximity of, say 100 meters.  If more than one point exists, then a new point (located at its center / centroid) should be created which should now have the mean of all points that have been merged. Can I do this without serious programming? May be a long but workable solution using available tool sets? ... View more

How do I obtain mean of DN values of a underlying raster layer only for such pixels that fall below a polygon boundary? ... View more