[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
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[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] Matplotlib-users Digest, Vol 72, Issue 10
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
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matplotlib-users@lists.sourceforge.net
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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)
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
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)
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
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
