Graph cursor handling

[jamiva]

Check your property node. You have a typo. You are setting the cursor position for "Y", it should be:  Cursor.PosX

[altenbach]

Also, if these are really x values, be aware that they don't align with the x-values of the data points, so it will lock to the closest point and not where you set the X.

If you want the cursor anywhere on the line, you need a free cursor and calculate the Y according to x, e.g. by linear interpolation of the data.

[Pavel_47]

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@jamiva wrote:

Check your property node. You have a typo. You are setting the cursor position for "Y", it should be:  Cursor.PosX

Thanks !!!

But what is strange, according to the HELP (link below), the value -1 puts cursor on all curves, but it seems not be the case.

https://www.ni.com/docs/en-US/bundle/labview-api-ref/page/properties-and-methods/vi-server/generic/c...

Plot with which the cursor is associated. If Plot is –1, the cursor snaps to all plots in the plot area. You can move the cursor to the nearest data point along any plot in the plot area.

[Pavel_47]

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@altenbach wrote:

Also, if these are really x values, be aware that they don't align with the x-values of the data points, so it will lock to the closest point and not where you set the X.

If you want the cursor anywhere on the line, you need a free cursor and calculate the Y according to x, e.g. by linear interpolation of the data.

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Stick to the closest X is not a problem for my app, actually such behavior is even better.

Not, I want both cursors to be locked to one of the curves (or both if this is possible)