I have a DEM as a raster and a shapefile as a vector layer consisting of 36 zones, I want maximum and minimum elevation values for each zone, for that I performed zonal statistics as a table tool in arcmap, the results I got is in a tabular form, now I want to locate these maximum elevation values for each zone as a point, is it possible to convert tabular maximum elevation into point?
Hello Farzana Shaheen,
Yes, you can convert the tabular maximum elevation into a point. First of all, convert the zonal table into excel by performing the steps as - ArcToolbox > Conversion Tools > Excel > Table To Excel.
Then add the latitude and longitude for each zone in the excel sheet.
Add XY data in ArcMap.Then go to display the XY data by giving the projection system. Lastly, export the data into a shape file (point).
Definitely yes, I agree with the steps described by Sushree Sangita Dash
@ Farzana Shaheen,
Yes, you can but first you have convert the zonal table into Excel table using conversation option in ArcTool box. Next you have to put lat/long data on this excel sheet and Complete the projection.
Finally you have to export the point data as shape file.
@Nasir thank you for your answer, after running raster calculator I am getting values in the range -32678 to +32676, and it failed to convert raster to point.
Farzana Shaheen as Nasir Hameed mentioned, you may need some preparatory steps before the calculations.
Some DEMs have edge cells which may be inadvertently interpolated, for instance, the DEM values may range from 526m to 1234 meters, but 'no data' or a mask may be set to zero, and so these cells may be some where between zero and an actual value - this can also occur in the case of voids. So it is mandatory to know what the 'no data' value is, some times it is 'NaN' ( not a number ), sometime it is an extreme positive of negative number. Also, some DEMs, like some ASTER have single cell spikes upward and downward. Also, whether your raster is signed ( or not ), integer ( and depth ) or floating point, and the file format can influence calculations. Can you provide a link to the original source?
also, if you have transformed the original DEM in any way( like re-projection ) can affect the results, and of calculations some types can work differently or force the result raster into another type - this is where one has to pay attention to the 'environment variables' in ArcMap to really lock down what the expected results are.
Also, to be of best assistance, one will get better help with better details, so taking a couple of screen captures of the salient details is extremely helpful, if one considers the 1,000,000s of permutations and combinations of details that are possible. ( https://getgreenshot.org/ )