Concerning extracting the size info of the image

user_9740394 0
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I am trying to extract the dimension size info of the image with GetSize() and Get3DSize() as follows:

try { 2DData.Get3DSize (sizeX, sizeY, sizeZ); }
catch { 2DData.GetSize (sizeX, sizeY); Break; } 
OKDialog ("Size in Z direction ="+ sizeZ)

For 2D data, Get3DSize() apparently does not work and the stuff within catch() will be executed to catch this error. Strange is that the size in the Z direction can still be extracted and it is 1. What happens here?

dimension dm-script image
1 Answers

GMS will internally use dimension size 1 for "non-existing" dimensions.

GetSize() and Get3DSize() are only old convenience "shorthand" commands. I would recommend using:

  • ImageGetDimensionSize() to access a specific dimensions.
  • ImageGetNumDimensions() to query the number of existing dimensions.
  • ImageGetDimensionSizes() to read multiple dimensions at once, f.e. to compute the number of values in an image. That's where "1" comes in handy.
    image test := realImage("",4,100)
//    image test := realImage("",4,10,20)
//    image test := realImage("",4,10,20,30)
    number x,y,z
    test.ImageGetDimensionSizes(x,y)
    result("\n x="+x)
    result("\n y="+y)
    test.ImageGetDimensionSizes(x,y,z)
    result("\n x="+x)
    result("\n y="+y)
    result("\n z="+z)
    result("\n # values:"+(x*y*z))
user_13028880
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