[Matplotlib-users] Fwd: Event handling
---BeginMessage--- Please respond on list and I, or someone else, will try and respond. On Tue, Jan 27, 2009 at 7:08 AM, Nils Wagner nwag...@iam.uni-stuttgart.de wrote: On Tue, 27 Jan 2009 06:37:09 -0600 John Hunter jdh2...@gmail.com wrote: On Tue, Jan 27, 2009 at 2:15 AM, Nils Wagner nwag...@iam.uni-stuttgart.de wrote: Hi all, Is it possible to restrict the mouse movements to the points of a graph (curve tracking) ? No, but you can obtain the vertices of the line that are within a tolerance of the clicked point using the picking functions. See the tutorial at http://matplotlib.sourceforge.net/users/event_handling.html and the pick* demos at http://matplotlib.sourceforge.net/examples/event_handling/index.html JDH Hi John, Thank you very much for your response. The horizontal distance between consecutive points is 5. in my application. Is the value of picker linked to the distance ? I mean How should I use picker to circumvent multiple results ? Cheers, Nils ---End Message--- -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Fwd: Event handling
On Tue, Jan 27, 2009 at 8:18 AM, Nils Wagner nwag...@iam.uni-stuttgart.de wrote: Thank you very much for your response. The horizontal distance between consecutive points is 5. in my application. Is the value of picker linked to the distance ? I mean How should I use picker to circumvent multiple results ? The scalar value of the picker is a epsilon tolerance in points (1 point = 1/72 inches) so you will need to set this distance to be small enough to only overlap one point when you click. If you want to only return a single point, you can write a custom picker function to return only the point closest to the click point. JDH -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Fwd: Event handling
On Tue, 27 Jan 2009 08:57:17 -0600 John Hunter jdh2...@gmail.com wrote: On Tue, Jan 27, 2009 at 8:18 AM, Nils Wagner nwag...@iam.uni-stuttgart.de wrote: Thank you very much for your response. The horizontal distance between consecutive points is 5. in my application. Is the value of picker linked to the distance ? I mean How should I use picker to circumvent multiple results ? The scalar value of the picker is a epsilon tolerance in points (1 point = 1/72 inches) so you will need to set this distance to be small enough to only overlap one point when you click. If you want to only return a single point, you can write a custom picker function to return only the point closest to the click point. Unfortunately, I am not sure how to implement a custom picker function. Any pointer would be appreciated. Thanks in advance. Nils -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Fwd: Event handling
On Tue, Jan 27, 2009 at 9:27 AM, Nils Wagner nwag...@iam.uni-stuttgart.de wrote: If you want to only return a single point, you can write a custom picker function to return only the point closest to the click point. Unfortunately, I am not sure how to implement a custom picker function. Any pointer would be appreciated. The example I pointed you to in my first post has an example of a custom picker function. It is in the section labelled picking with a custom hit test function http://matplotlib.sourceforge.net/examples/event_handling/pick_event_demo.html We've taken a lot of time to write the documentation and examples. When you ask us questions on the mailing list and we point you to documentation and examples, please take the time to read them. One reason we wrote them is so that we would not have to continuously solve the same problems over and over again on the mailing list. I'm happy to help if you find the documentation or examples confusing, but it will serve us both if you spend some time trying to digest them. JDH -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
