Feature Request: Data Cursor Mode

[jeremy-patterson1]

It would really help my plotting to have a DataCursorMode button on the toolbar.

A coded example is located here:
http://stackoverflow.com/questions/4652439/is-there-a-matplotlib-equivalent-of-matlabs-datacursormode

It would be nice if the user could drag the box to different corners around the point of interest and use the keyboard to move the datacursor onto the next data dot.

[tacaswell]

There in work under way (MEP22 iirc) to make it easier to configure the toolbar. This would make it possible for third party tools (ilke @joferkington 's wonderful module) to be plugged in.

Tagging for 1.5 as something like this is too big to get in before 1.4.

[jeremy-patterson1]

Although configuring the toolbar would be nice, I would be satisfied if
this functionality was added to the default toolbar.

Jeremy Patterson

On Wed, Apr 9, 2014 at 5:52 PM, Thomas A Caswell
notifications@github.comwrote:

There in work under way (MEP22 iirc) to make it easier to configure the
toolbar. This would make it possible for third party tools (ilke
@joferkington https://github.com/joferkington 's wonderful module) to
be plugged in.

Tagging for 1.5 as something like this is too big to get in before 1.4.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/2965#issuecomment-40032976
.

[tacaswell]

We can not add an import of data-cursor-mode in the matplotlib source (as it presumably imports matplotlib) and circular dependencies are resolved by one of the least helpful exceptions I have seen python raise. Unless Joe want's to merge his project into the main line, there is not much we can do aside from making the toolbar plug-able.

[jeremy-patterson1]

I'll ask him
On Apr 10, 2014 5:53 PM, "Thomas A Caswell" notifications@github.com
wrote:

We can not add an import of data-cursor-mode in the matplotlib source (as
it presumably imports matplotlib) and circular dependencies are resolved by
one of the least helpful exceptions I have seen python raise. Unless Joe
want's to merge his project into the main line, there is not much we can do
aside from making the toolbar plug-able.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/2965#issuecomment-40161137
.

[pelson]

Unless Joe want's to merge his project into the main line, there is not much we can do aside from making the toolbar plug-able.

I'm quite content having @joferkington's well implemented data cursor module outside of matplotlib. It gives much more freedom for it to move at a different release pace to mpl and should a simple install procedure via pip. Adding the functionality to the toolbar should be possible via some hook, which I'm much more keen to explore in mpl.

Just my 2c.

[joferkington]

While I'd be happy to have mpldatacursor merged in, I agree with @pelson on this one. I don't think it's the right thing to do at the moment. The project is still relatively immature, and therefore flexibility is a very good thing.

However, that having been said, it's easier for end-users if it is merged in (assuming folks think it's a common enough use case). I'm certainly not opposed to it in the long run.

Regardless, as soon as the toolbar enhancements (MEP22) get merged in, I'll certainly use them in mpldatacursor.

Thanks for the kind words!

[tacaswell]

Closing this as the consensus seems to be it is better to keep mplcursor separate for the near future.

[K2LEEKorea]

Based on mpl example cursor_demo.html and custom_boxstyle01.html, we can make similar features like this without javascript