Setting the parameters of the output raster in the dialog «Saving the map image into files of graphic formats»

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Three key parameters of the output raster (resolution, scale and element size) are interrelated among themselves:

 

Scale = PrecisionMet * MeterInElement.

 

Calculating the values ​​of parameters of the output raster when starting the dialog:

 

  1. Resolution (PrecisionMet) is taken from the map document for the current displaying scale.
  2. As a Scale the value of current scale of the map document displaying is set.
  3. The element's size of the output raster (MeterInElement) is calculated by the formula:

 

MeterInElement = Scale / PrecisionMet.

 

Calculating the values of parameters of  output  raster when changing the Scale value in the dialog:

 

  1. Resolution (PrecisionMet) remains unchanged.
  2. The size of the element of output raster (MeterInElement) is calculated by the formula:

 

MeterInElement = Scale / PrecisionMet.

 

Calculating the values ​​of parameters of the output raster when  changing the value of the Element size:

 

  1. Resolution (PrecisionMet) remains unchanged.
  2. Scale is calculated by the formula:

 

Scale = PrecisionMet * MeterInElement.