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python Programming Glossary: axisHow to efficiently calculate a running standard deviation? http://stackoverflow.com/questions/1174984/how-to-efficiently-calculate-a-running-standard-deviation 0.02 0.03 0.02 0.01 0.00 0.01 0.05 0.03 print nums.std axis 1 # 0.0116619 0.00979796 0.00632456 0.01788854 print nums.mean.. 0.0116619 0.00979796 0.00632456 0.01788854 print nums.mean axis 1 # 0.022 0.018 0.02 0.02 By the way there's some interesting..
How can I quantify difference between two images? http://stackoverflow.com/questions/189943/how-can-i-quantify-difference-between-two-images returns a 3D array average RGB channels the last array axis to obtain intensity. No need to do it for grayscale images e.g... arr.shape 3 return average arr 1 # average over the last axis color channels else return arr Normalization is trivial you..
Inverse Distance Weighted (IDW) Interpolation with Python http://stackoverflow.com/questions/3104781/inverse-distance-weighted-idw-interpolation-with-python x ~ rolling hills return np.sin 2 np.pi cycle np.mean x axis 1 known np.random.uniform size N Ndim .5 # 1 p 1 density x^p.. to nearest points s np.mean invdisttree.distances axis 0 print average weights s invdisttree.wsum invdisttree.wn #..
Is there a matplotlib equivalent of MATLAB's datacursormode? http://stackoverflow.com/questions/4652439/is-there-a-matplotlib-equivalent-of-matlabs-datacursormode if there are multiple axes. Only one will be shown per axis regardless. self.template template self.offsets offsets self.display_all.. self ax Draws and hides the annotation box for the given axis ax . annotation ax.annotate self.template xy 0 0 ha 'right'.. False # Update the annotation in the current axis.. annotation.xy x y annotation.set_text self.template x y annotation.set_visible..
Using strides for an efficient moving average filter http://stackoverflow.com/questions/4936620/using-strides-for-an-efficient-moving-average-filter the top row of the filter kernel. Roll along the vertical axis to get the middle row of the kernel 10 11 12 11 12 13 13 14.. you want to vectorize moving window operations on a single axis of an ndarray. It makes it really easy to calculate things like.. how you do it import numpy as np def rolling_window_lastaxis a window Directly taken from Erik Rigtorp's post to numpy discussion...
Python/Matplotlib - Is there a way to make a discontinuous axis? http://stackoverflow.com/questions/5656798/python-matplotlib-is-there-a-way-to-make-a-discontinuous-axis Matplotlib Is there a way to make a discontinuous axis I'm trying to create a plot using pyplot that has a discontinuous.. to create a plot using pyplot that has a discontinuous x axis. The usual way this is drawn is that the axis will have something.. x axis. The usual way this is drawn is that the axis will have something like this values later values where the..
Matplotlib basic plotting from text file http://stackoverflow.com/questions/11248812/matplotlib-basic-plotting-from-text-file pylab.legend pylab.title Title of Plot pylab.xlabel X Axis Label pylab.ylabel Y Axis Label You also might want to add something.. Title of Plot pylab.xlabel X Axis Label pylab.ylabel Y Axis Label You also might want to add something like fmt 'o' to the..
How do I convert (or scale) axis values and redefine the tick frequency in matplotlib? http://stackoverflow.com/questions/1143848/how-do-i-convert-or-scale-axis-values-and-redefine-the-tick-frequency-in-matpl where what you draw i.e. your plot actually shows up An Axis is the actual x and y axes Artists That's too deep in the interface..
python matplotlib blit to axes or sides of the figure? http://stackoverflow.com/questions/14844223/python-matplotlib-blit-to-axes-or-sides-of-the-figure this varies Figure Axes 0 many An axes is basically a plot Axis usually two x axis and y axis ticks ticklabels axis label background..
Matplotlib, adding text with more than one line. Adding text that can follow the curve http://stackoverflow.com/questions/17252790/matplotlib-adding-text-with-more-than-one-line-adding-text-that-can-follow-the pylab.xlim 0.9 2 pylab.ylim 0 2 pylab.xlabel 'Semi major Axis a in AU' pylab.ylabel 'Time of Flight in Years' pylab.text 1..
http://stackoverflow.com/questions/2051744/pyplot-reverse-y-axis reverse Y Axis I have a scatter plot graph with a bunch of random x y coordinates... with a bunch of random x y coordinates. Currently the Y Axis starts at 0 and goes up to the max value. I would like the Y.. at 0 and goes up to the max value. I would like the Y Axis to start at the max value and go up to 0. points 10 5 5 11 24..
http://stackoverflow.com/questions/2831527/phase-correlation value of R corresponds to the rotation deviation in the Y Axis and to the Scaling deviation in the X Axis from the original.. in the Y Axis and to the Scaling deviation in the X Axis from the original Image. References http etd.lsu.edu docs available..
Playing RTSP with python-gstreamer http://stackoverflow.com/questions/4192871/playing-rtsp-with-python-gstreamer use gstreamer for playing RTSP stream from IP cameras like Axis. I use a command line like this gst launch 0.10 rtspsrc location..
Will python SystemRandom / os.urandom always have enough entropy for good crypto http://stackoverflow.com/questions/5480131/will-python-systemrandom-os-urandom-always-have-enough-entropy-for-good-crypto import SimpleLineChart from pygooglechart import Axis def check_entropy arg 'cat' ' proc sys kernel random entropy_avail'.. 0 max_y 1 32 left_axis 0 'entropy' chart.set_axis_labels Axis.LEFT left_axis chart.set_axis_labels Axis.BOTTOM 'time in second'.. Axis.LEFT left_axis chart.set_axis_labels Axis.BOTTOM 'time in second' get_x_axis rng chart.download 'line..
Separating Axis Theorem and Python http://stackoverflow.com/questions/6013333/separating-axis-theorem-and-python Axis Theorem and Python This is what I am currently doing Creating.. Second the way you get your axis is incorrect. You write Axis1 A_TR 0 A_TL 0 A_TR 1 A_TL 1 Where it should read Axis1 A_TR.. Axis1 A_TR 0 A_TL 0 A_TR 1 A_TL 1 Where it should read Axis1 A_TR 1 A_TL 1 A_TR 0 A_TL 0 The difference is coordinates..
Matplotlib - Move X-Axis label downwards, but not X-Axis Ticks http://stackoverflow.com/questions/6406368/matplotlib-move-x-axis-label-downwards-but-not-x-axis-ticks Move X Axis label downwards but not X Axis Ticks Nb You may need to open.. Move X Axis label downwards but not X Axis Ticks Nb You may need to open the PNGs below directly Right..
scipy: savefig without frames, axes, only content http://stackoverflow.com/questions/8218608/scipy-savefig-without-frames-axes-only-content
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