Functions to change aspects of Quiver plots in Matlab. Color, length of vector, length of head and angle of the head can easily be changed.

I provide two functions.SetQuiverColor and SetQuiverLength.The function SetQuiverColor is heavily based on the answer by Suever found on Stackoverflow forum

Implements the MATLAB given quiver/quiver3 function adding a color coding depending on magnitude

%quiverC3D creates a 3D quiver plot and adds a color coding. The color coding is%given by the magnitudes of the component vectors. Large values result in colors %from the upper end of the used

Quiver (vector) with a reference vector or color code on a map or Cartesian axes.

This function is a substitute for the standard versions of quiver and quiverm available using a vanilla release of matlab. This version assumes a 2D vector field is being plotted using a gridded flow

Creates a color quiver plot with arrows colors according to the magnitude of the vector.

This is a modified version of the function quiver [from C.M. Thompson] to plot velocity vectors as arrows with components (u,v) at the points (x,y) with the color corresponding to the magnitude of

Color quiver based on magnitude or angle. Also, support uniform sampling by averaging or taking the fastest velocity within each grid cell.

patches which are used for drawing heads and tails.quiv = cquiver(x, y, u, v, 'cdata', 'angle') set color based on angle.quiv = cquiver(x, y, u, v, 'sampling', h) plots quiver plotat uniform grid where grid

quiver with color w/r to mag with colormap an NaN support.

Draws a quiver plot with arrows whose colors are w/r to the default color map and the magnitude of the data. It displays a colormap whose limits accurately reflect the data. Works with NaNs

Quiver vector plot with reference vector showing scale

Quiver vector plot function with reference vector showing the scale of the vector magnitude. Scale location adjustable as well as units. Best used foe publication or technical papers when color is an

Apply and save color schemes in MATLAB with ease.

MATLAB Schemer makes it easy to change the color scheme (a.k.a. theme) of the MATLAB display and GUI.You can use Schemer to import a predefined color scheme, transfer your color settings between

This is a modified version of the function quiver3 with color plot.

This is a modified version of the function quiver3 to plot velocity vectors as arrows with components (U,V,W) at the points (X,Y,Z) with the color corresponding to C data. From the idea of Suever

User draws region and this finds pixels in the image with a similar color, using Delta E.

Demo to perform very, very simple color detection in LAB color space. The RGB image is converted to LAB color space and then the user draws some freehand-drawn irregularly shaped region to identify a

Produce a 3D quiver of arrows with many visualization options

This quiver3D differs from the basic quiver3 in that it allows far more options for visualization. Based on the 'surf' command, you can produce color-based visuals of your data via the multiple

RGB to color name. Color name to RGB. Supports many palettes: CSS, dvips, HTML, MATLAB, RAL, SVG, X11, xcolor, xkcd,...

One function converts between RGB and color names, in both directions.The function COLORNAMES accepts either RGB values or color names as its inputs, and returns the color names and RGB values from

RGB triplets for 949 colors, by how they're perceived on a computer monitor and their common names.

This function returns the RGB triplet for almost any color. And unlike the way colors are somewhat officially defined (http://en.wikipedia.org/wiki/Web_colors), this data set describes returns

Plotting of colored 3D arrows based on patch command

This function allows plotting of colored 3D arrows by generating patchdata (faces “F”, vertices “V” and color data “C”). The patch data whichallows plotting of 3D quiver arrows with specified (e.g

Detect colored regions in an image via thresholding in HSV color space.

This script is a demo that shows you how to find objects of a certain color in an image. For this example I'm using the standard onion, peppers, or kids image that ships with the Image Processing

Plots matlab quiver with log scaling while maintaining proper arrows directions.

Normally when using quiver, the arrows' size change linearly with the data. However, sometimes the data will appear more naturally in a logarithmic scale, and plotting this is not possible using

The frequency image is where the pixel intensity represents the frequency of the same color pixels.

This is a MATLAB implementation of the Color Frequency concept introduced by T. Kashiwagi & S. Oe.With this script, you pick a color image and then it computes the color frequency image. The

Quiver plot with filled triangles head

% setting of the quiver body width%% QUIVER_TRI(x,y,u,v,headsize,headangle,width,col) same as before, plus% setting of the color%% See also QUIVER.

Rotates the direction of quiver arrows produced by quiver().

Rotate the quiver arrows produced by quiver() about their (x,y) base by any specified angle in degrees or radians. h = quiver(X, Y, U, V); quiverRotate(h) Rotate existing arrows by

Same as QUIVER, QUIVER3 or FEATHER but with colored, normalized, widened and ARROW's!

This program use QUIVER/QUIVER2 to generate a vector field specialized plot and then customizes the arrows according to its length.Just type>> quiver2(U,V)and that's it. You get - customized

This function provides an improvement over the QUIVER3 technique for visualizing 3D vector fields.

and contain the corresponding position and velocity% components. QUIVER3D automatically scales the arrows to fit.% % QUIVER3D(X,Y,Z,U,V,W,COLOR) provides an input argument for coloring

Displays sprintf-formatted strings in the Command Window using the specified color/underline style

, 0.3] - standard Matlab RGB color format in the range 0.0-1.0 [26, 178, 76] - numeric RGB values in the range 0-255 '#1ab34d' - Hexadecimal format in the range '00'-'FF' (case

Edges of a color image by the max gradient method.

Extracts the edges of a color image without converting it to grayscale.Changes in color are detected even when the grayscale color of two pixels are the same. The edge strength is typically greater

Matlab code to plot color histograms and color clouds

Usage: createColorHistograms(im_str)im_str can be an image file location or a three-dimensional arrayThere seem to be two confounds in plotting color histograms. One is the obvious one of showing a

Returns a Matlab RGB color specifier corresponding to a given color name (139 colors supported).

RGB = RGB('COLORNAME') returns the red-green-blue triple corresponding to the color named COLORNAME by the CSS3 proposed standard [1], which contains 139 different colors (an rgb triple is a 1x3

Scales multiple quiver plots to use the same length scale.

SCALE_QUIVERS(QH, SCALE) scales multiple quiver plots to use the same length scale (by default, the longest vector)QH is a vector of handles to the quiver plots. Note that a handle of a quiver plot

Create tints of colors and colormaps

Create specified tints of colors and colormaps or show examples of tints.To create shades, see http://www.mathworks.com/matlabcentral/fileexchange/47245-color-shades

Create and apply GMT-style colormaps in Matlab

cptcmap.m DocumentationAuthor: Kelly KearneyThis function creates and applies a colormap defined in a color palette table (.cpt file). Color palette files provide more flexible colormapping than

Script to do simple color detection in RGB color space. Finds red objects in the image.

This script is a demo that shows you how to find objects of a certain color in an image. For this example I'm using the standard onion, peppers, or canoe image that ships with the Image Processing

Generate maximally-distinct colors in an RGB colormap.

(double/single) used for the RGB calculations.Specify the bit/color depth to control the number of samples of each color channel.Sort the colormap (e.g. by hue, chroma, lightness, farthest colors, etc.).See the

This program just tracks all red color objects and draws a bounding box around them.

This program just tracks all red color objects and draws a bounding box around them. This works on the difference between frames concept. Every frame in the video is returned as an rgb image on which

Create color maps from actual names that people use for colors.

viewers more than 900 of the most commonly-used colors on the internet, and getting users to use their own words to describe that color. The result is a database of the most commonly-used names for colors

Numerical computation with functions

Color Tools for MATLAB is an experimental collection of MATLAB functions related to color science computation and visualization.

Color Tools for MATLAB is an experimental collection of MATLAB functions related to color science computation, color scales, visualization, and ICC color profiles. It is meant to supplement the

MATLAB Image Manipulation Toolbox

functionality.Let me know if you find bugs. Highlights:GUI extensions of several core functionsPassthrough/fallback replacements for several IPT toolsMulti-model color picker GUIGUI for parametric color-based mask

Converts a gray image to color image

This program converts a gray image to color image. The conversion is based on color image submitted along with the input gray image. Actualy it transfers color to a grayscale image. The

GIBBON: The Geometry and Image-Based Bioengineering add-ON for MATLAB

This function can be used to create various plots of errors related to Lab color coordinates.

This function can be used to illustrate error values related to datapoints of CIE-L*a*b* color coordinates. A larger error is plotted by a larger marker, or in quiver plots by longer vectors.This is

Efficient identification of color names for any RGB

Yes, its easy to identify [1, 0, 0] as a red color. But sometimes we want to find ALL colors in an image that we would identify as red. Thus, [1, 0.1, 0.1] is also easily seen as red by the eye. Its

Choose a set of n colors that can be readily distinguished from each other

When plotting a set of lines, you may want to distinguish them by color. By default, Matlab chooses a small set of colors and cycles among them, and so if you have more than a few lines there will be

Updated code hatch with color and inverted hatches

Colour toolbox that accompanies the second edition of Computational Colour Science using MATLAB

Colour toolbox that accompanies the second edition of Computational Colour Science using MATLAB (Westland, Ripamonti and Cheung, 2012).Toolbox allows spectral interpolation, calculation of colour

Label plots with spectra. Convert wavelengths to RGB. Functions for color matching and illuminants.

This is the beginning of a set of functions for working with color as wavelengths (spectral color) and in the xyY and XYZ color spaces.Current functionality includes:spectrumLabel - Add a color bar

The complete palette of ColorBrewer 2.0 colormaps. Simple selection by scheme name and map length.

BREWERMAP provides all ColorBrewer 2.0 colorschemes for MATLAB, with simple selection by colormap length and colorscheme name. Alternatively the colorscheme name can be preselected, after which only

Collection of functions and examples of parametric active model.

This function can be used to create various plots of Lab color coordinates.

The plot_Lab function is a simple tool to create nice-looking Matlab figures of CIE-L*a*b* color coordinates of a set of data samples.Features:-> plots can be created in true-color (each datapoint

Plot georeferenced vector fields with color options.

a way that their zonal components shrink to zero at the poles.In addition to fixing the problems described above, quivermc also allows a few extra options including color settings, arrow density, and

Plot "perfect" colorful arrows in matlab with more editable properties than quiver.

properties in plot or patch....Colorful arrows adopted to current colormapSupport creating vector time series"Perfect" arrows1.2 Functions includedFUN_quiver_by_plotV2.m​Plot single color arrows by

Synthesize a perfect version of the X-Rite Color Checker chart.

The X-Rite Color Checker Chart is a very common standard used for standardizing different images and imaging systems. (This chart has been known in the past as the Gretag Macbeth Color

Generate vertices, faces and color for u3d format and display it in pdf or doc, xls and ppt

Several color conversion and graphic tools to play around with

Several color conversion and graphic tools to play around with There are mainly three functionalities1) conversion between color spaces (RGB, HSV, HSL, XYZ, xyY, Lab), here nothing new2) Constructing

Color marker based object tracking for video analysis using Kalman filter

This demo shows a color marker based object tracking for video analysis. You can use a custom color mask function created by using colorThreshoulder app.The tracking performs robustly because missing

Plots a 3D line with color encoding along the length using the patch function.

This function plots a 3D line (x,y,z) encoded with scalar color data (c). This function is an improvement over the CLINE function previously made available on TMW File Exchange. Rather than using

Color image segmentation

We propose a superpixel-based fast FCM (SFFCM) for color image segmentation. The proposed algorithm is able to achieve color image segmentation with a very low computational cost, yet achieve a high

A constant-lightness cyclic colormap for phase.

lightness is good for displaying phase because it does not put strong emphasis on any part of the color map. A well-written and aesthetically-pleasing overview of Kristen's cmocean colormaps can be found

A colormap that attempts to be color blind friendly

This is a .mat file that contains 12 colors specified by Matlab color triplets. The file contains a matrix of colors(each row is 1 color) as well as a matrix of the names for each color. The names

The provided Matlab functions demonstrate a simple method for training and testing a color detection

The provided Matlab functions demonstrate a simple method for training and testing a color detection system. In general, a color detection algorithm searches an image for pixels that have a specific

Quiver plots directly from scattered data

RGB Color Detection in Images Real Time Video

RGB color detection in images and Real time video is presented in this project.# Color Detection in Image 1. Click on Use Image 2. Select image source *Demo Image (Already in files) *Browse

Image-based quiver plot for MATLAB

This project is an image-based variant of MATLAB's built-in quiver plot. The ImageQuiver class creates a graphics object that behaves similarly to the built-in quiver graphics object except that it