to know about Qwt

[jjbabu]

Hi,
I am new to Qwt,but i have good knowledge on developing Gui's using QT.

->May i know Qwt will solve below all display requirements?
1) Polar plots
2) spectrum display (updating amplitude vs. frequency)
3) bearing display (updating direction vs. frequency) and
4) waterfall display (scrolling time vs. frequency with amplitude/direction shown in shades of gray or color)

-> One more question is,can all above display Gui's will update (i.e refresh rate) with 1second of time?

please kindly help me on above issues.if any docs available on above requirements,please post me .

Thanking you,

[Uwe]

1) Polar plots
See http://qwtpolar.sourceforge.net

2) spectrum display (updating amplitude vs. frequency)
Displaying sets of x/y points is the main usecase of Qwt.

3) bearing display (updating direction vs. frequency)
Please be more specific.

4) waterfall display (scrolling time vs. frequency with amplitude/direction shown in shades of gray or color)
This should be what is called a spectrogram in Qwt: displaying raster data, were the z value is mapped to a color.

One more question is,can all above display Gui's will update (i.e refresh rate) with 1second of time?
Displaying trillions of points is obviously more time consuming, than a curve of 1000 points. A spectrogram of 1600x1600 pixels will take longer than another one with 800x600 pixels.

I recommend to check the examples that are included in the Qwt package on your system. They will give you an idea of what you can expect.

Uwe