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We will use for this tutorial a GiD model named 'cross' that represents a cross street has has been calculated by the Iber solver (http://www.iberaula.es) and has some results 'on gauss points'.
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The procedure is defined in the file scripts\dev_kit.tcl, that is a file of special interest for Tcl developers because include common tools.
Now it is possible to create a graph for the analysis name Hydraulic, result name "Detph (m)" for the element number 676 (using the first component in case of more than one, like vectorial, and the first gauss point in case of more thant than one) with something like this
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but this is not comfortable for a final user.
To invoke our code we will add a new button to the 'macros toolbar', and when pressing the button a menu will be shown with the current results to be selected, and the the user must select in screen the elements to be plotted.
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