Data Resolution

It is important to ensure the data prepared for Maprosoft has an appropriate resolution since reducing the resolution of data will result in maps being rendered more quickly. For this discussion, data resolution refers to the amount of detail and accuracy of feature geometries.

If you use ESRI ArcMap to prepare shape files for Maprosoft, use the following procedure to reduce geometry resolution:

  • Start editing data by selecting 'Start Editing' from the the Editor drop down menu.
  • A window will appear titled 'Start Editing'. Select the layer to modify and press OK.
  • Select all the features of the layer using the selection tool.
  • Open the 'Advanced Editing' toolbar.
  • Select the 'Generalize' button on the 'Advanced Editing' toolbar.
  • A window will appear titled 'Generalize'. Enter a value for the maximum allowable offset - see last note below.
  • Stop editing data by selecting 'Stop Editing' from the the Editor drop down menu.
  • Open the popup menu on the appropriate layer in the 'Layers' tree control and select Data -> Export Data...
  • Enter a path to save the lower resolution data.

Note:

  • This discussion does not apply to point features.
  • Obviously the data should not be too coarse - otherwise it will not be accurate.
  • When the data is in geographic coordinates, a suitable value for the maximum allowable offset is about 0.0001 to 0.0050, however, you should still validate the resulting geometries.