Re: [Matplotlib-users] pick event for images
Hi Nils,
I'm glad you found it useful!
I'm certainly not opposed to seeing it integrated into matplotlib in the
long run. At the moment, though, it's probably changing a bit too
quickly. There's a lot of little things I'd like to add to it.
On the other hand, if it ever were integrated upstream, there's an
opportunity to clean things up quite a bit, as mpldatacursor currently has
quite a few workarounds for minor bugs in old versions of mpl and minor api
changes, etc.
Cheers!
-Joe
On Thu, Oct 31, 2013 at 8:00 AM, Nils Wagner nils...@googlemail.com wrote:
Hi Joe,
Just now I installed your package mpldatacursor and run the example
image_example.py.
Awesome !
Is there a chance to integrate it into matplotlib ?
Nils
On Wed, Oct 30, 2013 at 5:58 PM, Joe Kington joferking...@gmail.comwrote:
On Oct 30, 2013 9:43 AM, Nils Wagner nils...@googlemail.com wrote:
Hi all,
How can I retrieve the corresponding color value in percent, when I
click on the image ?
You have to jump through a couple of hoops.
Have a look at the _coords2index function in pick_info.py for
mpldatacursor.
https://github.com/joferkington/mpldatacursor/blob/master/mpldatacursor/pick_info.py
Also, mpldatacursor might be useful for what you're doing. Not to plug my
own project too much, but it does exactly this, among other things.
Hope that helps!
-Joe
fig = plt.figure()
ax = fig.add_subplot(111)
cax = ax.imshow(col[:,::2],
interpolation='nearest',extent=[0.5,20.5,0.5,2
0.5],alpha=1,picker=5)
fig.canvas.mpl_connect('pick_event', onpick)
def onpick(event):
...
Nils
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Re: [Matplotlib-users] pick event for images
Hi Daniele,
First off, the FSF uses and endorses a number of non GPL licenses. They
reccomend the Apache license over MIT-style licenses for permissive cases
due to patent issues, but they don't require it. In fact, even the GNU
project has several X11 (the FSF's name for the MIT license) licensed
projects (e.g. Off the top of my head, I know ncurses is both an official
GNU project and is X11-licensed.).
However, I'm glad you brought this up. I haven't actually filled out a
copyright transfer form to the FSF. I intended to at one point, but never
did and didn't think about the copyright assignment in the license header
very much. Not doing so, and leaving copyright in the name of any potential
contributors actually makes things quite a bit simpler.
At any rate, it's certainly something I should clarify.
Thanks!
-Joe
On Sat, Nov 2, 2013 at 11:55 AM, Daniele Nicolodi dani...@grinta.netwrote:
Hello Joe,
I accidentally had a look at the source file you linked to and I found
the copyright and license terms quite strange. Are you really
transferring copyright for your work to the Free Software Foundation
which is releasing it under the MIT license? I find very strange that
the FSF is using a license other than the (L)GPL. Does it also mean
that who wants to contribute to your project must sign a copyright
assignment to the FSF?
I'm puzzled.
Best,
Daniele
On 30/10/2013 17:58, Joe Kington wrote:
On Oct 30, 2013 9:43 AM, Nils Wagner nils...@googlemail.com
mailto:nils...@googlemail.com wrote:
Hi all,
How can I retrieve the corresponding color value in percent, when I
click on the image ?
You have to jump through a couple of hoops.
Have a look at the _coords2index function in pick_info.py for
mpldatacursor.
https://github.com/joferkington/mpldatacursor/blob/master/mpldatacursor/pick_info.py
Also, mpldatacursor might be useful for what you're doing. Not to plug
my own project too much, but it does exactly this, among other things.
Hope that helps!
-Joe
fig = plt.figure()
ax = fig.add_subplot(111)
cax = ax.imshow(col[:,::2],
interpolation='nearest',extent=[0.5,20.5,0.5,2
0.5],alpha=1,picker=5)
fig.canvas.mpl_connect('pick_event', onpick)
def onpick(event):
...
Nils
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Re: [Matplotlib-users] pick event for images
On 02/11/2013 19:07, Joe Kington wrote: Hi Daniele, First off, the FSF uses and endorses a number of non GPL licenses. They reccomend the Apache license over MIT-style licenses for permissive cases due to patent issues, but they don't require it. In fact, even the GNU project has several X11 (the FSF's name for the MIT license) licensed projects (e.g. Off the top of my head, I know ncurses is both an official GNU project and is X11-licensed.). Thank for the info. I knew that the FSF endorses a number of different licenses, but I was under the impression that the only projects for which copyright transfer was in place were under the GPL or LGPL license. I don't know if it makes much sense for other, more permissive, licenses. However, I'm glad you brought this up. I haven't actually filled out a copyright transfer form to the FSF. I intended to at one point, but never did and didn't think about the copyright assignment in the license header very much. Not doing so, and leaving copyright in the name of any potential contributors actually makes things quite a bit simpler. Indeed. I believe going the burden of copyright transfer makes sense only for major projects under copyleft licenses. Cheers, Daniele -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] pick event for images
Hi Joe,
Just now I installed your package mpldatacursor and run the example
image_example.py.
Awesome !
Is there a chance to integrate it into matplotlib ?
Nils
On Wed, Oct 30, 2013 at 5:58 PM, Joe Kington joferking...@gmail.com wrote:
On Oct 30, 2013 9:43 AM, Nils Wagner nils...@googlemail.com wrote:
Hi all,
How can I retrieve the corresponding color value in percent, when I
click on the image ?
You have to jump through a couple of hoops.
Have a look at the _coords2index function in pick_info.py for
mpldatacursor.
https://github.com/joferkington/mpldatacursor/blob/master/mpldatacursor/pick_info.py
Also, mpldatacursor might be useful for what you're doing. Not to plug my
own project too much, but it does exactly this, among other things.
Hope that helps!
-Joe
fig = plt.figure()
ax = fig.add_subplot(111)
cax = ax.imshow(col[:,::2],
interpolation='nearest',extent=[0.5,20.5,0.5,2
0.5],alpha=1,picker=5)
fig.canvas.mpl_connect('pick_event', onpick)
def onpick(event):
...
Nils
--
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that
developers love is also attractive to malware creators. Download this
white
paper to learn more about secure code signing practices that can help
keep
Android apps secure.
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[Matplotlib-users] pick event for images
Hi all,
How can I retrieve the corresponding color value in percent, when I click
on the image ?
fig = plt.figure()
ax = fig.add_subplot(111)
cax = ax.imshow(col[:,::2], interpolation='nearest',extent=[0.5,20.5,0.5,2
0.5],alpha=1,picker=5)
fig.canvas.mpl_connect('pick_event', onpick)
def onpick(event):
...
Nils
attachment: image.png--
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Re: [Matplotlib-users] pick event for images
On Oct 30, 2013 9:43 AM, Nils Wagner nils...@googlemail.com wrote:
Hi all,
How can I retrieve the corresponding color value in percent, when I
click on the image ?
You have to jump through a couple of hoops.
Have a look at the _coords2index function in pick_info.py for
mpldatacursor.
https://github.com/joferkington/mpldatacursor/blob/master/mpldatacursor/pick_info.py
Also, mpldatacursor might be useful for what you're doing. Not to plug my
own project too much, but it does exactly this, among other things.
Hope that helps!
-Joe
fig = plt.figure()
ax = fig.add_subplot(111)
cax = ax.imshow(col[:,::2], interpolation='nearest',extent=[0.5,20.5,0.5,2
0.5],alpha=1,picker=5)
fig.canvas.mpl_connect('pick_event', onpick)
def onpick(event):
...
Nils
--
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that
developers love is also attractive to malware creators. Download this
white
paper to learn more about secure code signing practices that can help keep
Android apps secure.
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[Matplotlib-users] Pick event after using Zoom to rectangle
Hi all, How can I use a pick event when I have used Zoom to rectangle before ? Nils -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Pick event after using Zoom to rectangle
If you're asking how to do it interactively, just click on the zoom button again, and you should be able to fire pick events by clicking again. Hope that helps! -Joe On Oct 29, 2013 4:58 AM, Nils Wagner nils...@googlemail.com wrote: Hi all, How can I use a pick event when I have used Zoom to rectangle before ? Nils -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Pick event after using Zoom to rectangle
Thank you very much ! On Tue, Oct 29, 2013 at 3:16 PM, Joe Kington joferking...@gmail.com wrote: If you're asking how to do it interactively, just click on the zoom button again, and you should be able to fire pick events by clicking again. Hope that helps! -Joe On Oct 29, 2013 4:58 AM, Nils Wagner nils...@googlemail.com wrote: Hi all, How can I use a pick event when I have used Zoom to rectangle before ? Nils -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] Pick Event - twinx
Hi all, I am aware when using overlapping axes twinx I can only pick the objects in the active axes. I would like to pick objects (lines) in both axes. Does anyone have the workaround to this problem Regards, Arek -- LogMeIn Central: Instant, anywhere, Remote PC access and management. Stay in control, update software, and manage PCs from one command center Diagnose problems and improve visibility into emerging IT issues Automate, monitor and manage. Do more in less time with Central http://p.sf.net/sfu/logmein12331_d2d ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Pick event
(13/05/2012 02:52), Arek Kędzior: What I am trying is to plot multiple discontinuous lines. I know that this approach does not work very well. How about using LineCollection. Put all curves into line collection Use Pick event to get line segment (what function to use ?) Once I have line segment, get xdata, ydata corresponding to line segment (what function to use ?) Why don't you use: picker=myTest in your ax.plot, where def myTest(artist,mousevnt): ... return (hit,kwdict) performs any test you like? Again, this is called separately for every Artist belonging to the Usual Suspects, but you may control whether this is the first line found, then your program just computes the distance, or the second one, then it computes the distance, and discriminates between the two. The properties kwdict passed to your callback will permit to do the rest. Or, perhaps, the first time the test doesn't do anything, and returns False, and the second time computes both distances, and finds the minimum. You have your private access to both lines anyway. The generalization to many lines should be straightforward. Jerzy K. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] pick event
I am trying to use pick event. See the simple script
below. I am interested to find the shortest distance between pick
point (mouse coord.) and the line at the discrete points only (points on
the curve from data)
What am I doing wrong ?
Regards,
Arek
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.lines import Line2D
import math as math
# create figure and attach axes to it
fig = plt.figure(1)
ax = fig.add_subplot(111)
def getMinDistance(xmouse, ymouse, xList, yList):
find shortest distance between mouse
coordinates and pick point
point pick may be a list of points if
data is clouded
Input
xmouse - x coordinate of mouse (x - pick)
ymouse - y coordinate of mouse (y - pick)
xList - xData from curve
yList - yData from curve
Returns:
dmin - minimum distance
index - index of data point in the xList
and yList
dmin = math.sqrt((xList[0] -
xmouse)**2. + (yList[0]-ymouse)**2.)
index = 0
for idx in range(1,len(xList)):
d =
math.sqrt((xList[idx] - xmouse)**2. + (yList[idx]-ymouse)**2.)
if(d dmin):
dmin = d
index = idx
return dmin, index
def showMarker(x, y, color):
draw marker at loction x, y with color
# draw marker
markerOn, = ax.plot(x, y, 'o', color =
color)
def OnPick(event):
pick event
print ''
mouseEvent = event.mouseevent
# get pick coord
xmouse, ymouse = mouseEvent.xdata,
mouseEvent.ydata
# get the artist
lineObj = event.artist
print lineObj
if not isinstance(lineObj, Line2D):
return
ind = event.ind
# check if indexes exist of the pick
object
N = len(ind)
if not N:
return
# get curve picked data
Xdata, Ydata = lineObj.get_data()
color = lineObj.get_color()
xLi = np.take(Xdata, ind)
yLi = np.take(Ydata, ind)
dmin, index = getMinDistance(xmouse,
ymouse, xLi, yLi)
xP = xLi[index]
yP = yLi[index]
xStr = '%.4g' % xP
yStr = '%.4g' % yP
txt = 'X = ' + xStr + ' ; ' + 'Y =
' + yStr
print txt
# show marker
showMarker(xP, yP, color)
# redraw to show marker
fig.canvas.draw()
# connect to pick event
fig.canvas.mpl_connect('pick_event',OnPick)
# generate data for display
x = np.arange(-4,4,0.1) # x-
coord
y2 = x**2 + 5.0
# y coord of first curve
y = 2*x +
4.0
# y coord of the second curve
# create the list of x and y data
xList = [x,
x]
yList = [y, y2]
objList = [] # store draw lines
(artists)
# display 2 curves
for idx in range(len(xList)):
obj, = ax.plot(xList[idx], yList[idx],
picker = 5)
objList.append(obj)
# display plot
plt.show(1)--
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Re: [Matplotlib-users] pick event
Arek Ke;dzior: I am trying to use pick event. ... What am I doing wrong ? Wrong with WHAT? What do you expect? Jerzy Karczmarczuk -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] pick event
On Saturday, May 12, 2012, Jerzy Karczmarczuk wrote: Arek Kędzior: I am trying to use pick event. ... What am I doing wrong ? Wrong with WHAT? What do you expect? Jerzy Karczmarczuk Arek. Could you provide a little more detail about your issue? Cheers! Ben Root -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] pick event
If you pick one of the curves in the close location to tangancy area, the
OnPick function will be ececuted twice (2 curves) and will display 2 markers. I
want to find the shortest distance from the pick location (mouse coord.) to a
discrete point on the curve and draw marker on the curve at this location (only
one). See the line with print lineObj
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Today's Topics:
1. pick event (Arek Kedzior)
2. Re: pick event (Jerzy Karczmarczuk)
3. Re: pick event (Benjamin Root)
--
Message: 1
Date: Sat, 12 May 2012 06:07:37 -0700 (PDT)
From: Arek Kedzior akedz...@yahoo.com
Subject: [Matplotlib-users] pick event
To: matplotlib-users@lists.sourceforge.net
matplotlib-users@lists.sourceforge.net
Message-ID:
1336828057.20499.yahoomail...@web140317.mail.bf1.yahoo.com
Content-Type: text/plain; charset=iso-8859-1
I am trying to use pick event.? See the simple script
below.? I am interested to find the shortest distance between pick
point (mouse coord.) and the ?line at the discrete points only (points on
the curve from data)
What am I doing wrong ?
Regards,
Arek
?
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.lines import Line2D
import math as math
?
# create figure and attach axes to it
fig = plt.figure(1)
ax = fig.add_subplot(111)
?
?
def getMinDistance(xmouse, ymouse, xList, yList):
???
??? find shortest distance between mouse
coordinates and pick point
??? point pick may be a list of points if
data is clouded
??? Input
??? xmouse - x coordinate of mouse (x - pick)
??? ymouse - y coordinate of mouse (y - pick)
??? xList? - xData from curve
??? yList? - yData from curve
??? Returns:
??? dmin? - minimum distance
??? index - index of data point in the xList
and yList
???
dmin? = math.sqrt((xList[0] -
xmouse)**2. + (yList[0]-ymouse)**2.)?
index = 0
??? for idx in range(1,len(xList)):
??? d =
math.sqrt((xList[idx] - xmouse)**2. + (yList[idx]-ymouse)**2.)
??? if(d dmin):
???
dmin = d
???
index = idx
return dmin, index
?
def showMarker(x, y, color):
???
??? draw marker at loction x, y with color
???
??? # draw marker
??? markerOn, = ax.plot(x, y, 'o', color =
color)
def OnPick(event):
???
??? pick event
???
??? print ''
??? mouseEvent = event.mouseevent
??? # get pick coord
??? xmouse, ymouse = mouseEvent.xdata,
mouseEvent.ydata
??? # get the artist
??? lineObj = event.artist
print lineObj
if not isinstance(lineObj, Line2D):
??? return
ind = event.ind
# check if indexes exist of the pick
object
??? N = len(ind)
??? if not N:
??? return
??? # get curve picked data
??? Xdata, Ydata = lineObj.get_data()
??? color = lineObj.get_color()
xLi = np.take(Xdata, ind)
??? yLi = np.take(Ydata, ind)
??? dmin, index = getMinDistance(xmouse,
ymouse, xLi, yLi)
???
xP = xLi[index]
??? yP = yLi[index]
???
xStr = '%.4g' % xP
??? yStr = '%.4g' % yP
??? txt = 'X = ' + xStr + ' ;? ' + 'Y =
' + yStr
??? print txt
??? # show marker
??? showMarker(xP, yP, color)
??? # redraw to show marker
??? fig.canvas.draw()
???
# connect to pick event???
fig.canvas.mpl_connect('pick_event',OnPick)
?
# generate data for display
x = np.arange(-4,4,0.1)? # x-
coord
y2 = x**2 + 5.0?
# y coord of first curve
y? = 2*x +
4.0??
# y coord of the second curve
# create the list of x and y data
xList = [x,
x]??
yList = [y, y2]
objList = [] # store draw lines
(artists)
# display 2 curves
for idx in range(len(xList)):
??? obj, = ax.plot(xList[idx], yList[idx],
picker = 5)
??? objList.append(obj)
?
# display plot
plt.show(1)
-- next part --
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Message: 2
Date: Sat, 12 May 2012 16:44:16 +0200
From: Jerzy Karczmarczuk jerzy.karczmarc...@unicaen.fr
Subject: Re: [Matplotlib-users] pick event
To: matplotlib-users@lists.sourceforge.net
Message-ID: 4fae7740.7070...@unicaen.fr
Content-Type: text/plain; charset=iso-8859-1
Arek Ke;dzior:
I am trying to use pick event.
...
What am I doing wrong ?
Wrong with WHAT?
What do
Re: [Matplotlib-users] pick event
Arek Ke;dzior: If you pick one of the curves in the close location to tangancy area, the OnPick function will be executed twice (2 curves) and will display 2 markers. I want to find the shortest distance from the pick location (mouse coord.) to a discrete point on the curve and draw marker on the curve at this location (only one). See the line with print lineObj Ok, now I -- perhaps -- understand. This is a speculation... Your approach cannot work, since the low level event handling issues TWO pick events, one for each curve. Everything works very well, your program finds the appropriate point ... on both curves, separately. I suggest that you try to react to lower level mouse events. Look into the Pick code within the Artist class. The system tries to pick all the children, and here - I believe - resides your problem. You should perhaps discriminate the picked target at this point. Jerzy Karczmarczuk -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Pick event
What I am trying is to plot multiple discontinuous lines. I know that this approach does not work very well. How about using LineCollection. Put all curves into line collection Use Pick event to get line segment (what function to use ?) Once I have line segment, get xdata, ydata corresponding to line segment (what function to use ?) I tied this approach as well Put all data points into numpy.array and each curve was separated by numpy.nan It worked but I was getting run-time warning in distance calculations. Any suggestions how to ? Regards, Arek From: matplotlib-users-requ...@lists.sourceforge.net matplotlib-users-requ...@lists.sourceforge.net To: matplotlib-users@lists.sourceforge.net Sent: Saturday, May 12, 2012 1:12 PM Subject: Matplotlib-users Digest, Vol 72, Issue 11 Send Matplotlib-users mailing list submissions to matplotlib-users@lists.sourceforge.net To subscribe or unsubscribe via the World Wide Web, visit https://lists.sourceforge.net/lists/listinfo/matplotlib-users or, via email, send a message with subject or body 'help' to matplotlib-users-requ...@lists.sourceforge.net You can reach the person managing the list at matplotlib-users-ow...@lists.sourceforge.net When replying, please edit your Subject line so it is more specific than Re: Contents of Matplotlib-users digest... Today's Topics: 1. Re: Matplotlib-users Digest, Vol 72, Issue 10 (Arek Kedzior) 2. Re: pick event (Arek Kedzior) -- Message: 1 Date: Sat, 12 May 2012 09:35:59 -0700 (PDT) From: Arek Kedzior akedz...@yahoo.com Subject: Re: [Matplotlib-users] Matplotlib-users Digest, Vol 72, Issue 10 To: matplotlib-users@lists.sourceforge.net matplotlib-users@lists.sourceforge.net Message-ID: 1336840559.33998.yahoomail...@web140304.mail.bf1.yahoo.com Content-Type: text/plain; charset=iso-8859-1 If you pick one of the curves in the close location to tangancy area, the OnPick function?will be?ececuted twice (2 curves) and will display 2 markers. I want to find the shortest distance from the pick location (mouse coord.) to a discrete point on the curve and?draw?marker on the curve at this location (only one).? See the line with print lineObj From: matplotlib-users-requ...@lists.sourceforge.net matplotlib-users-requ...@lists.sourceforge.net To: matplotlib-users@lists.sourceforge.net Sent: Saturday, May 12, 2012 10:59 AM Subject: Matplotlib-users Digest, Vol 72, Issue 10 Send Matplotlib-users mailing list submissions to ??? matplotlib-users@lists.sourceforge.net To subscribe or unsubscribe via the World Wide Web, visit ??? https://lists.sourceforge.net/lists/listinfo/matplotlib-users or, via email, send a message with subject or body 'help' to ??? matplotlib-users-requ...@lists.sourceforge.net You can reach the person managing the list at ??? matplotlib-users-ow...@lists.sourceforge.net When replying, please edit your Subject line so it is more specific than Re: Contents of Matplotlib-users digest... Today's Topics: ? 1. pick event (Arek Kedzior) ? 2. Re: pick event (Jerzy Karczmarczuk) ? 3. Re: pick event (Benjamin Root) -- Message: 1 Date: Sat, 12 May 2012 06:07:37 -0700 (PDT) From: Arek Kedzior akedz...@yahoo.com Subject: [Matplotlib-users] pick event To: matplotlib-users@lists.sourceforge.net ??? matplotlib-users@lists.sourceforge.net Message-ID: ??? 1336828057.20499.yahoomail...@web140317.mail.bf1.yahoo.com Content-Type: text/plain; charset=iso-8859-1 I am trying to use pick event.? See the simple script below.? I am interested to find the shortest distance between pick point (mouse coord.) and the ?line at the discrete points only (points on the curve from data) What am I doing wrong ? Regards, Arek ? import numpy as np import matplotlib.pyplot as plt from matplotlib.lines import Line2D import math as math ? # create figure and attach axes to it fig = plt.figure(1) ax = fig.add_subplot(111) ? ? def getMinDistance(xmouse, ymouse, xList, yList): ??? ??? find shortest distance between mouse coordinates and pick point ??? point pick may be a list of points if data is clouded ??? Input ??? xmouse - x coordinate of mouse (x - pick) ??? ymouse - y coordinate of mouse (y - pick) ??? xList? - xData from curve ??? yList? - yData from curve ??? Returns: ??? dmin? - minimum distance ??? index - index of data point in the xList and yList ??? dmin? = math.sqrt((xList[0] - xmouse)**2. + (yList[0]-ymouse)**2.)? index = 0 ??? for idx in range(1,len(xList)): ??? d = math.sqrt((xList[idx] - xmouse)**2. + (yList[idx]-ymouse)**2.) ??? if(d dmin): ??? dmin = d ??? index = idx return dmin, index ? def showMarker(x, y, color): ??? ??? draw marker at loction x, y with color ??? ??? # draw marker ??? markerOn, = ax.plot(x, y, 'o', color = color
[Matplotlib-users] Pick event and annotate
Hi all,
How can I combine onpick events with annotate ?
Any pointer would be appreciated.
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.set_title('click on points')
line, = ax.plot(np.random.rand(100), 'o', picker=5) # 5
points tolerance
def onpick(event):
thisline = event.artist
xdata = thisline.get_xdata()
ydata = thisline.get_ydata()
ind = event.ind
print 'onpick points:', zip(xdata[ind], ydata[ind]),
ind
ax.annotate('Test',xy=(ind,
ydata[ind]),horizontalalignment='left',verticalalignment='top')
# ax.redraw_in_frame()
fig.canvas.mpl_connect('pick_event', onpick)
plt.show()
Thanks in advance.
Nils
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Re: [Matplotlib-users] Pick event and annotate
On Wed, Feb 10, 2010 at 4:43 AM, Nils Wagner
nwag...@iam.uni-stuttgart.de wrote:
Hi all,
How can I combine onpick events with annotate ?
Any pointer would be appreciated.
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.set_title('click on points')
line, = ax.plot(np.random.rand(100), 'o', picker=5) # 5
points tolerance
def onpick(event):
thisline = event.artist
xdata = thisline.get_xdata()
ydata = thisline.get_ydata()
ind = event.ind
print 'onpick points:', zip(xdata[ind], ydata[ind]),
ind
ax.annotate('Test',xy=(ind,
ydata[ind]),horizontalalignment='left',verticalalignment='top')
# ax.redraw_in_frame()
You need to call fig.canvas.draw() at the end of onpick.
JDH
fig.canvas.mpl_connect('pick_event', onpick)
plt.show()
Thanks in advance.
Nils
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Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
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Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
http://p.sf.net/sfu/solaris-dev2dev
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