quote:

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Originally posted by YimingChen

You need to obtain the legend object for each layer and change its text. Try the code below:

for gl in gp:
    lgnd = gl.label('Legend')
    lgnd.text=' \l(1) %(1)'

Must have something different from internal "\l(1) %(1)" to prevent auto expending so I just added a space, but you can add a caption or whatever as long as it is different from the generic internal form

We added this as another sample on github

https://github.com/originlab/Python-Samples/blob/main/4.%20Graphing/Graph%20Legend%20to%20Show%20Only%20First%20Plot.py

James

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for gl in gp:
    lgnd = gl.label('Legend')
    lgnd.text=' \l(1) %(1)'