Loading data

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Tue, 10/02/2012 - 06:02 am

I was wondering if there is an easier way to load a dataset into Igor for subsequent calculations.

At the moment I use the following code:

String Text1= “C:...:image1.tif" //define image path
ImageLoad/T=tiff/C=-1/LR3D Text1 //load the image
String Text1=”image1.tif” //define name of the wave to access it via wave
Make/O/N=(5,5,7) wave1=0 //build framework for dataset to be loaded
wave wave1=$T0

For me this seems quite complicated for just loading a dataset. But regardless of this it is even more annoying that I have to define the exact size in pixel of the image to be loaded. With DimSize I could determine the size in pixel but for this the wave has to be accessed via wave beforehand. And this – at least with my code - requires to provide a framework wave (wave1) with the image size.

Does anybody know a solution to this?

Thank you,

Finn
I'm not sure what you are saying but I think you will find the answer in this example:
Function Demo(path)
    String path         // Path to TIFF file
   
    ImageLoad/T=tiff/C=-1/LR3D path //load the image
    if (V_flag == 0)
        Print "ImageLoad failed"
        return -1
    endif
   
    String name = StringFromList(0, S_waveNames)    // Name of loaded wave
    Wave w = $name      // Reference to loaded wave
    Variable numRows = DimSize(w, 0)
    Variable numColumns = DimSize(w, 1)
   
    Print name, numRows, numColumns
   
    return 0        // Success
End

October 2, 2012 at 11:25 am - Permalink

Ok, thank you. I was not aware that after referencing the wave via "w" can be accessed because it does not appear as wave in the data folder.

Thank you,
Finn

October 4, 2012 at 05:08 am - Permalink

finn wrote:
Ok, thank you. I was not aware that after referencing the wave via "w" can be accessed because it does not appear as wave in the data folder.



A wave reference is just that, a reference. It is a name that points to an existing wave. for instance if you do

wave w = root:wave0
w+=1


We are manipulating wave0. w is simply a temporary name that is used in the code

October 4, 2012 at 07:19 am - Permalink