how to create customized curve ( only know the shape )

Hi everyone~

I wanna turn couple curves (see pic above) into data in matlab. There are weird functions. All I have is the plots.

It's OK if I can just get some data that looks similar to those curves.

Is there a way to create such customized data? Any imaging processing tool to turn pictures of plots into data?

Let me know. Any thoughts are appreciated. Thanks~

Answer 1

[bym]

maybe this or similar would help

http://www.mathworks.com/matlabcentral/fileexchange/7173-grabit

[Yuji Zhang]

Hi Proecsm!

Thanks for sharing! It worked pretty nicely!

Just curious about a further question: is there something that can automatically recognize the curve in the image? I think it's an image processing question - I'm not very familiar...

Let me know. Any discussion's appreciated~

Answer 2

[Pourya Alinezhad]

yes...there is a programme which accepts images and returned data... named "data_from_graph_1v0" it's about 300kb and i can mail it to u...

[Yuji Zhang]

Hi Pourya~

It's so nice of you to offer! Could you please mail it to [e-mail]

proecsm recommended the code http://www.mathworks.com/matlabcentral/fileexchange/7173-grabit. It worked. But still I wanna take a look at a different code - maybe a different approach.

Thanks a lot~

[Pourya Alinezhad]

gmail dosn't accept .exe files as attachments... give me an other email address... not hosted by gmail ... this is a full application and just for the purpose you mentioned.

Answer 3

[Viktor Tzivnev]

Hi Pourya,

I'm stuck with the same Problem as Yuiji, could you please send me tha programm as well at [e-mail]. This will be awesome!

Thanks a lot!

br

Viktor