Matlab(TM) compatible commands

In addition, scipy provides many more commands, but due to it's size, I haven't committed yet to making it a requirement for matplotlib.

Plotting commands Function Description acorr plot the autocorrelation function annotate annotate something in the figure arrow add an arrow to the axes axes Create a new axes axhline draw a horizontal line across axes axvline draw a vertical line across axes axhspan draw a horizontal bar across axes axvspan draw a vertical bar across axes axis Set or return the current axis limits bar make a bar chart barh a horizontal bar chart broken_barh a set of horizontal bars with gaps box set the axes frame on/off state boxplot make a box and whisker plot cla clear current axes clabel label a contour plot clf clear a figure window clim adjust the color limits of the current image close close a figure window colorbar add a colorbar to the current figure cohere make a plot of coherence contour make a contour plot contourf make a filled contour plot csd make a plot of cross spectral density delaxes delete an axes from the current figure draw Force a redraw of the current figure errorbar make an errorbar graph figlegend make legend on the figure rather than the axes figimage make a figure image figtext add text in figure coords figure create or change active figure fill make filled polygons findobj recursively find all objects matching some criteria gca return the current axes gcf return the current figure gci get the current image, or None getp get a handle graphics property grid set whether gridding is on hist make a histogram hold set the axes hold state ioff turn interaction mode off ion turn interaction mode on isinteractive return True if interaction mode is on imread load image file into array imshow plot image data ishold return the hold state of the current axes legend make an axes legend loglog a log log plot matshow display a matrix in a new figure preserving aspect pcolor make a pseudocolor plot pcolormesh make a pseudocolor plot using a quadrilateral mesh pie make a pie chart plot make a line plot plot_date plot dates plotfile plot column data from an ASCII tab/space/comma delimited file pie pie charts polar make a polar plot on a PolarAxes psd make a plot of power spectral density quiver make a direction field (arrows) plot rc control the default params rgrids customize the radial grids and labels for polar savefig save the current figure scatter make a scatter plot setp set a handle graphics property semilogx log x axis semilogy log y axis show show the figures specgram a spectrogram plot spy plot sparsity pattern using markers or image stem make a stem plot subplot make a subplot (numrows, numcols, axesnum) subplots_adjust change the params controlling the subplot positions of current figure subplot_tool launch the subplot configuration tool suptitle add a figure title table add a table to the plot text add some text at location x,y to the current axes thetagrids customize the radial theta grids and labels for polar title add a title to the current axes xcorr plot the autocorrelation function of x and y xlim set/get the xlimits ylim set/get the ylimits xticks set/get the xticks yticks set/get the yticks xlabel add an xlabel to the current axes ylabel add a ylabel to the current axes autumn set the default colormap to autumn bone set the default colormap to bone cool set the default colormap to cool copper set the default colormap to copper flag set the default colormap to flag gray set the default colormap to gray hot set the default colormap to hot hsv set the default colormap to hsv jet set the default colormap to jet pink set the default colormap to pink prism set the default colormap to prism spring set the default colormap to spring summer set the default colormap to summer winter set the default colormap to winter spectral set the default colormap to spectral

Event handling Function Description connect register an event handler disconnect remove a connected event handler

Matrix commands Function Description cumprod the cumulative product along a dimension cumsum the cumulative sum along a dimension detrend remove the mean or besdt fit line from an array diag the k-th diagonal of matrix diff the n-th differnce of an array eig the eigenvalues and eigen vectors of v eye a matrix where the k-th diagonal is ones, else zero find return the indices where a condition is nonzero fliplr flip the rows of a matrix up/down flipud flip the columns of a matrix left/right linspace a linear spaced vector of N values from min to max inclusive logspace a log spaced vector of N values from min to max inclusive meshgrid repeat x and y to make regular matrices ones an array of ones rand an array from the uniform distribution [0,1] randn an array from the normal distribution rot90 rotate matrix k*90 degress counterclockwise squeeze squeeze an array removing any dimensions of length 1 tri a triangular matrix tril a lower triangular matrix triu an upper triangular matrix vander the Vandermonde matrix of vector x svd singular value decomposition zeros a matrix of zeros

Probability Function Description levypdf The levy probability density function from the char. func. normpdf The Gaussian probability density function rand random numbers from the uniform distribution randn random numbers from the normal distribution

Statistics Function Description corrcoef correlation coefficient cov covariance matrix amax the maximum along dimension m mean the mean along dimension m median the median along dimension m amin the minimum along dimension m norm the norm of vector x prod the product along dimension m ptp the max-min along dimension m std the standard deviation along dimension m asum the sum along dimension m

Time series analysis Function Description bartlett M-point Bartlett window blackman M-point Blackman window cohere the coherence using average periodiogram csd the cross spectral density using average periodiogram fft the fast Fourier transform of vector x hamming M-point Hamming window hanning M-point Hanning window hist compute the histogram of x kaiser M length Kaiser window psd the power spectral density using average periodiogram sinc the sinc function of array x

Dates Function Description date2num convert python datetimes to numeric representation drange create an array of numbers for date plots num2date convert numeric type (float days since 0001) to datetime

Other Function Description angle the angle of a complex array griddata interpolate irregularly distributed data to a regular grid load load ASCII data into array polyfit fit x, y to an n-th order polynomial polyval evaluate an n-th order polynomial roots the roots of the polynomial coefficients in p save save an array to an ASCII file trapz trapezoidal integration