Plot Module

[nmoutinho]

Created a Plot2D Module which allows you to easily plot data from a Mat. You can plot 1D or 2D plots, change the window size, the axis limits and the colors of all the elements.

In C++, you just have to do:

Mat data; 
Mat plot_result;
//-------------------------------//
//     fill your data here
//-------------------------------//
Ptr<plot::Plot2d> plot;
plot = plot::createPlot2d(data);
plot->render(plot_result);
//-------------------------------//
//         show the plot
//-------------------------------//
imshow("plot",plot_result );

and that's it.

These are two examples of functions being plotted:
sin(x)

x^2

[nmoutinho]

Hi @vpisarev, this is my new module now in opencv_contrib. Hope it will be added to the repository.

[vpisarev]

the docs are now in Doxygen/Markdown format

[nmoutinho]

Hi @vpisarev, thanks for your input. I already made some of the changes you suggested. The biggest one is still missing though, to make the class follow the abstract interface - hidden implementation concept.

[nmoutinho]

@vpisarev, I am now uploading a new version where the class follows the concept you proposed. Hope it fills the requirements.

[nmoutinho]

@vpisarev, the new version of the module is already uploaded. Thanks.

[nmoutinho]

Hi @ilya-lavrenov, I am still waiting for a feedback for this new module, to know if there is something I need to change before it can be merged to the opencv_contrib repository. Thanks.

[nmoutinho]

@vpisarev I've already done the changes you suggested. Thanks!

[vpisarev]

looks like you may retain ony opencv2/core.hpp include in the header and move other include's to precomp.hpp. It will improve build speed

[nmoutinho]

@vpisarev changes committed.

[nmoutinho]

@vpisarev is that anything else I have to do?

[nmoutinho]

@vpisarev are you considering to add this module to the repository or is there something I have to change? Thank you for your attention.

[paroj]

this should be a CV_Assert. (as well as the ifs below)

[StevenPuttemans]

@nmoutinho might be interesting for you: opencv/opencv#5386
If we combine both things, the plotting properties can become even better in OpenCV!

[StevenPuttemans]

@nmoutinho is it possible to have a look at the failed checks? This would enable us to fix everything and continue adding this. There is a new user base interested in this http://answers.opencv.org/question/73233/how-do-you-plot-graphs-in-opencv-projects/?comment=73401#comment-73401

[nmoutinho]

Hi @StevenPuttemans, it is so cool that someone is interested in my Plot! I was waiting for your response since May (long time has passed...). I am a little busy now with my PhD thesis but as soon as I have time I will do all the changes required and hopefully we will get the Plot function in OpenCv. Thanks!

[StevenPuttemans]

That is great! Good luck with your PhD thesis, and hoping to hear soon from you!

[vpisarev]

@nmoutinho, sorry for a huge delay! let's finally put it in 👍

[StevenPuttemans]

@vpisarev w00t w00t, I have the impressions you guys are doing a huge job at finally merging everything?

[nmoutinho]

Thanks a lot @vpisarev ;) I really hope people like it. It still has a lot to improve but it's a good start.

[anupamsobti]

Is there a Python API available as well?

[StevenPuttemans]

Is there a Python API available as well?

Since there is not a single CV_WRAP inside the C++ code, I am afraid not. You could have a look at other modules and contribute the wrapping as a pull request?

[anupamsobti]

I'm currently a little occupied. I'll try and get back to this sometime next month.