Write that VI PNG file will not replace the existing file

Hi all

I use VI file PNG write to store the graph in a png file. I am able to save the file with a specific file name, which includes the date, model number, serial number etc.. Once the chart is saved as a png file, if I make changes in the graph (as autoscale, turn captions etc.) and try again to save the file with the same file name, write PNG leader VI does not save the changes I made on the chart. I'm looking at the timestamp on the windows Explorer, but it is not updated. I opened the VI itself (which is write protected) to see if it generates an error if I provided the same file name, but it does not generate an error.

I don't know if I am missing anything.

Can you people please help me find a way to replace the existing PNG file?

I'm using LabVIEW 2013 on Win 7 machine.

p.s. I use the second method mentioned in this article:

http://digital.NI.com/public.nsf/allkb/5AE4ADCBB65A6D8F86256FBF007A1AC1

(Programmatically with the Get Image method).

Thanks for your help

OPR

OPR wrote:
... Write VI PNG file does not save the changes I made on the chart. I'm looking at the timestamp on the windows Explorer, but it is not updated.

You are also looking at the image itself? Explorer Windows cannot update the timestamp in the display immediately, or you might be looking at creation time, which doesn't seem to change when you replace a file.

I can say that I saw a similar question very recently (he was also PNG, even if it's not really relevant), and here it certainly crushes - http://forums.ni.com/t5/LabVIEW/LAVA-snippet-overwrite-keeps-old-date-time-of-png-file/m-p/3257059#M...

Tags: NI Software

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