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View Full Version : Can Qwt be used for financial charting? (bar chart, candlestick)



Joachie
16th April 2009, 07:18
I know Qwt is probably more scientific focused than finance, but since there is a lot of overlap, I'm wondering if anyone's implemented a candlestick charting or at least a bar chart (open, close, hi, low). Are there any examples of this?

Uwe
16th April 2009, 16:04
I know Qwt is probably more scientific focused than finance, but since there is a lot of overlap, I'm wondering if anyone's implemented a candlestick charting or at least a bar chart (open, close, hi, low). Are there any examples of this?
The thread below has some code attached.

http://sourceforge.net/mailarchive/forum.php?thread_name=78f82c3e0903191242m52567cb8j a2de6a273ed4b8be%40mail.gmail.com&forum_name=qwt-interest

Uwe

Joachie
21st April 2009, 00:48
The thread below has some code attached.

http://sourceforge.net/mailarchive/forum.php?thread_name=78f82c3e0903191242m52567cb8j a2de6a273ed4b8be%40mail.gmail.com&forum_name=qwt-interest

Uwe

Is this incorporated into the new version or does one have to patch it themselves?

Uwe
21st April 2009, 06:58
You can extend Qwt by implementing custom plot items. This code is such an item, so it is simply application code, that you have to copy into your application ( or use it as an inspiration for your own implementation ).

My plans are to have this type of financial items in the next Qwt release, but the API will differ.

Uwe

vcernobai
12th February 2010, 19:28
Hi Uwe,

I found this thread very useful for myself. I read the conversations from the link provided above. I saw the screenshots ... I've seen the main.cpp with the example how to draw candlesticks, but I can't find anymore the source file: qwt_plot_price.cpp in SVN. Additinally, qwt_series_data.cpp + qwt_plot_item.h from the last revision (> 700) do not contain any QWTPriceMove class and Rtti_PlotPrice. Neither revision 517 doesn't contain them.

Can you please let me know where can I find these files or if it's easier please forward them by email( victor_pas@yahoo.com )? I am very interested in creating charts using financial data.

Thank you in advance and best regards,
Victor

vcernobai
12th February 2010, 19:34
Hi Uwe,

I found this thread very useful for myself. I read the conversations from the link provided above. I saw the screenshots ... I've seen the main.cpp with the example how to draw candlesticks, but I can't find anymore the source file: qwt_plot_price.cpp in SVN. Additinally, qwt_series_data.cpp + qwt_plot_item.h from the last revision (> 700) do not contain any QWTPriceMove class and Rtti_PlotPrice. Neither revision 517 doesn't contain them.

Can you please let me know where can I find these files or if it's easier please forward them by email( victor_pas@yahoo.com )? I am very interested in creating charts using financial data.

Thank you in advance and best regards,
Victor

Siado
16th May 2010, 13:08
Hello, when i can get the "qwt_plot_seriesitem.h" file?
This header include in qwt_plot_price.h from this thread http://sourceforge.net/mailarchive/forum.php?thread_name=78f82c3e0903191242m52567cb8j a2de6a273ed4b8be%40mail.gmail.com&forum_name=qwt-interest

Uwe
16th May 2010, 20:20
svn co https://qwt.svn.sourceforge.net/svnroot/qwt/trunk/qwt

Uwe