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Storing point from data file in variable

by Jeremy Conlin :: Rate this Message:

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I have a file containing all my data.  I can  easily plot that data.  I need
to store the first data point in a particular column so I can place a label
at that point.  Can someone show me how to do this?
Small example:
# ----------------------------------
x1 = # Get data from file
y1 = 1.0

set label "Hello" at x1, y1 right
# -----------------------------------

Thanks,
Jeremy
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