How to draw streamlines in pivlab

[dry6211]

Dear pivlab users,

I want to ask about how to draw streamlines in the plot section. Because when I click the bottom "draw streamlines", a cross appears but then I don't know what to do with it (like the figure attached). May you help me solve this problem?

Thank you!

Best,
Ruoyu Dong

[William]

Hi, usually, you would just click you left mouse button to start a streamline... But maybe they won't be displayed, because there is hardly any stream that a line could follow? Is there anything displayed in the command window?

[dry6211]

Dear William,

When I click the left mouse button, nothing happens. Nothing is displayed in the command window.

Best,
Ruoyu Dong

[William]

After you clicked, are the buttons on the right side enabled again?
Can you load an analyse one of the example images supplied with PIVlab and test streamlines there?

[William]

... and you have to click the RIGHT mouse button at the end to exit "stream line drawing mode"...

[dry6211]

It began to work! I just tried the sample images, it worked. And then I tried my own images, it also worked! Unbelievable! Thank you, William.