Re: [Maptitude] How to calculate perimeter?

[Reinaldo Paul Pérez Machado]

Hi Armando, I found that there was lacking quotation marks around the name of the Layer. But now what follows is this then I do not know how to proceed. Cheers, Reinaldo P.S. The modified macro, that I am running on Maptitude 4.6: // Returns an options array where the name of the option is the Name of the polygon and the value is its perimeter // it also returns the total perimeter of all areas found // Macro "GetPolygons" (sLayerName, sSetName, sNameField)      SetLayer("Favelas2010")                                                                 // This problem was solved     if sNameField = null then sNameField = "ID"         rh = GetFirstRecord (sLayerName  + "|" +  sSetName)                 // Now stops here...         arPerimeters = {}     nTotper = o     while rh <> null do      nPer = GetPerimeter(rh2id(rh))         arPerimeters.(sLayerName.(sNameField)) =  nPer         nTotper = nTotper + nPer         rh = GetNextRecord (sLayerName  + "|" +  sSetName ,, )     end           Return( { arPerimeters, nTotper} ) endMacro Armando Scalise wrote:   HI Reinaldo Here is some code that might help you do that. I have not tested it, so bear in mind it might require some slight changes to do what you need. Good luck // Returns an options array where the name of the option is the Name of the polygon and the value is its perimeter // it also returns the total perimeter of all areas found //  Macro "GetPolygons" ( sLayerName, sSetName, sNameField)      SetLayer(sLayerName)     if sNameField = null then sNameField = "ID"          rh = GetFirstRecord (sLayerName  + "|" +  sSetName)          arPerimeters = {}     nTotper = o     while rh <> null do      nPer = GetPerimeter(rh2id(rh))         arPerimeters.(sLayerName.(sNameField)) =  nPer         nTotper = nTotper + nPer         rh = GetNextRecord (sLayerName  + "|" +  sSetName ,, )     end               Return( { arPerimeters, nTotper} ) endMacro 2011/2/4 Reinaldo Paul Pérez Machado <rpm...@usp.br>   Hello, Please, I would like to know how is it possible to get the corresponding perimeter of a bunch of polygons in a geographic files? Thanks in advance. Any aid would be very much appreciated. Cheers, Reinaldo -- Armando Scalise