Histogram

a good way to show differences between two sets of data about their location and distribution

histnd Histogram count of ND data with ND bins histmat = histnd(x, y, ..., xedges, yedges, ...) Extract ND histogram data containing the number of events of [x, y, ...] tuples that fall in each bin of the ND-grid defined by xedges, yedges, .... The edges are passed to histc internally and should...

%A Simple function that makes a 2D histgram% Input: data: two cols, x value; y value% xrange: range and bins for x value (edges)% yrange: range and bins for y value (edges)%Output: Count of a specifice (x,y) bin combination;% Suggested visualizing tool: I like to use imagesc; bar3 will work fine%...


Platforms: Matlab

Generic function for computing histogram of an image. Image can be either 2D or 3D, grayscale or color. For color images, the result is the concatenation of the histogram computed for each band.If no output is requested, the histogram is plotted on the current axis.Several options can be applied,...


Platforms: Matlab

GUI for calculating 1st and 2nd order statistics of series of images.Calculates Average, RMS, Skewness and Kurtosis - 1st order statistics. (identical to File ID: #25981 - GUI for calculating roughness parameters in images)Has an option of filtering low-frequency and high-frequency components of...


Platforms: Matlab

histNorm(dataSets) plots normalized histogram of each set of data contained in cell dataSets for comparison. The xlims are set to 3 times the maximum standard deviation from the mean of all each set. The default bin sizes are a tenth of the standard deviation. h is the handle of the bar plot,...


Platforms: Matlab

PGFHIST2D(X, Y, W) will save a PNG file representing the 2D histogram created from data points specified by X and Y with weights specified by W. The vectors X, Y, and W must have the same number of elements. The text to include in a Latex file to produce the histogram is displayed. Valid options...


Platforms: Matlab

This function generates a vector of triangular distributed continuous random variable. By specifying minimum value(a), maximum value(b), mode(c), and number of variables to be generated(n), the function gives a vector of random variables as output (X). The command syntax is X=trirnd(a,c,b,n).You...


Platforms: Matlab

function mHist = hist2d ([vY, vX], vYEdge, vXEdge)2 Dimensional HistogramCounts number of points in the bins defined by vYEdge, vXEdge.size(vX) == size(vY) == [n,1]size(mHist) == [length(vYEdge) -1, length(vXEdge) -1] EXAMPLEmYX = rand(100,2);vXEdge = linspace(0,1,10);vYEdge =...


Platforms: Matlab

PDFPLOT displays a histogram of the empirical probability density function (PDF) for the data in the input array X using nbins number of bins.If input X is a matrix, then pdfplot(X) parses it to the vector and displays PDF of all values.For complex input X, pdfplot(X) displays PDF of...


Platforms: Matlab

This is similar to wind_rose, but I found that that function did way more than I needed it to.This function:1. takes in angle measurements in earth coordinates (0 degrees is N, 90 degrees is E, 180 degrees is South, 270 deg is West)2. converts those angles into mathematical coordinates3. creates...


Platforms: Matlab

EARTH_ROSE direction rose from earth coordinate angles. Syntax: EARTH_ROSE(E) EARTH_ROSE(E, nbins) Inputs: E: Angular current direction in degrees, earth coordinates. OPTIONAL: nbins: number of bins to plot histogram Example: theta = [110 110 110 90 288 290 292]; nbins = 20; earth_rose(theta,...


Platforms: Matlab

To find the threshold of the imageIt works well with images that have a bi-modal histogram (those with two distinct regions).


Platforms: Matlab

Explore correlations between variables with pairwise histograms plotted over grid.This function combines the functionality of hist3 (joint/bivariate/pairwise histogram) and plotmatrix (pairwise scatter plots over a grid). It allows one to visualize and quantify the correlations among many variables.


Platforms: Matlab

This is a simple GUI to dislay 3D images, i.e., stack of 2D images. The sliding bar and edit window allow changing the slice number (See the screenshot). It has a colormap menu which includes gray,inverse gray, hot and jet colortables as choices. When the user right-clicks on the image, the...


Platforms: Matlab

Draws a variable width histogram.Does not calculate data, it is just a drawing utility.Draws histogram with defined x, so data length(data)=length(x)-1, or, if lengths are equal, bars are centred at x.Syntax:HANDLES = VWHIST(X,Y,DX,DY,DIREC,FaceColor,EdgeColor)


Platforms: Matlab

A MATLAB implementation of the plot described in Eilers, P.H.C. and Goeman, J.J (2004) "Enhancing scaterplots with smoothed densities", Bioinformatics 20(5):623-628.This plot is useful when a 2D scatterplot of your data would result in an uninterpretable mass of overlaid points. The smoothed...


Platforms: Matlab

2D histogram: Extract the number of joint events - (x,y) data value pairs that fall in each bin of the grid defined by xedges and yedges.Uses:[N,BIN] = HISTD(X,EDGES)which returns1) N is a LENGTH(EDGES) vector, N(k) will count the value X(i) if EDGES(k)


Platforms: Matlab

This function generates an overlapping histogram of multiple populations. For a demo simply type "histn".SYNTAX: h=histn(Y,X,S)Y - Data array that is NxM where N is the number of groups and M is the number of measures within each group. Right now M has to be the same for each group.X - Optional...


Platforms: Matlab

The Wang-Landau algorithm, also called the flat-histogram algorithm, can be used to calculate the density of states of a microscopic system. In this simulation, the Wang-Landau algorithm is used to calculate the density of states for a two-dimensional Ising ferromagnet with periodic boundary...


Platforms: Mac