Recovery/annotation of text on a graph of intensity

Hello
I'm trying to overlay a text on a graph of intensity. It would be good if the text overlay behaved like an extra layer, like the IMAQ image to display indicators.
I tried 2 methods.
1. I'm creating a text overlay, and I am placing it on an image control. The image control is placed on the graph of the intensity with transparent borders (pretend that there is not).
The problem with this method is the background of the text overlay is not see through. The other problem is I can not pan and zoom in/out with the tools of graphic intensity given that the image control is located at the top of the graph of the intensity.
Later, I can see questions trying to pan as the overlay should follow the pan movement.
2. I'm creating a text overlay by using the image control and its conversion into a graph of intensity (convert picture to pixmap etc...). This second intensity graph contains only the text overlay. Then I'm merging the two graphs of intensity by pulling on some 2d on a main intensity graph subsets to the place corresponding to the mouse pointer, replacing it with the second graph of the intensity (the one containing the text overlay) and put it back in its original spot in the 2d array.
It's slow thing (700ms for a text overlay) and the question is now the overlay is merged with the graph of the intensity, it changes color when you play with the Z scale palette and grows with the zoom.

Any suggestions?
Thank you

Use the property of field intensity, draw images-> before.  It's actually a superposition of control photo directly on the chart (free).  I like the images in the field who have been snuck in the graphics, there are a few versions a feature very underused.  Now just use all the photo functions to create taxt or that you could want.

Tags: NI Software

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