X Y Grid Math

function [coef, RSquared]=plotdata(xi,yi,polyorder) A simple data plotting function, useful for inspecting x,y data. The function accepts data in the form of a single vector, a pair of vectors "x" and "y", or a single NxM or MxN matrix with the independent variable (x) in first row or column...

BLOCK_LEVINSON(Y, L) solves the matrix equation T * x = y, where T is a symmetric matrix with block Toeplitz structure, and returns the solution vector x. The matrix T is never stored in full (because it is large and mostly redundant), so the input parameter L is actually the leftmost "block...

function [h1, h2] = plot_dir3 (vX, vY, vZ) Plotting x-y-z variables with direction indicating vector to the next element. Example vX = linspace(0,2*pi, 10)'; vY = sin (vX); vZ = cos (vX); plot_dir3(vX, vY, vZ);


Platforms: Matlab

This program generates a cartesian mesh [x,y,z] from a 3D curve, and a vector of associated radii.It takes four inputs, two of which are optional: * P (3D curve) = 3xN matrix with each point of the curve given in correct order and columnwise. * R (Radii) = 1xN vector with positive scalar...


Platforms: Matlab

This function takes points drawn on x-y axis and maps them to a sphere in real time. Click and drag on the planar area to draw a series of dots (one graphic object).


Platforms: Matlab

AREA_STAIRS(X,Y) is similar to AREA(X,Y). compared to AREA(X,Y), AREA_STAIRS(X,Y) generates stairs between colored regions.


Platforms: Matlab

This program checks whether a point (x,y) lies inside,outside or on a circle defined by 3 other points.Syntax: iscircle(X,Y,x,y), where X=[x1 x2 x3] and Y=[y1 y2 y3]. Thus, a circle can be made out of these 3 points-->(x1,y1), x2,y2)&(x3,y3).Program checks whether point (x,y) lies inside,outside...


Platforms: Matlab

scatterquad2(X,Y,Z) finds the volume under the surface defined by the points (X(i),Y(i),Z(i)) with linear interpolation on the Delaunay triangulation of (X,Y) and Z=0 outside the convex hull of (X,Y).Example:load seamountscatterquad2(x,y,z-min(z)) % returns 190.7996inR = (x>=211.1 & x=-48.35 & y


Platforms: Matlab

ifilter(x,y) or ifilter(y) or ifilter([x y]) or ry=ifilter(x,y,center,width,shape,plotmode,filtermode)Keyboard-operated interactive Fourier filter function for time-series signal (x,y), with keyboard controls that allow you to adjust the filter parameters continuously while observing the effect...


Platforms: Matlab

suppose we have function of z(x,y). this program computes how the error in x and y will influence the error in z(x,y).error in z we defined asdelta(z)=diff(z,x)*delta(x)+diff(z,y)*delta(y), where delta(x) and delta(y) the errors in x and y measurements.diff(z,y) is the partial derivatives of z...


Platforms: Matlab

plot3AniAnaglyph(S,params) produces an anaglyph (red/cyan 3D) plot3 animation of the of arguments in cartesian coordinates (S = [X,Y,Z]).The animation includes the evolution and rotation of the arguments confined to a 1x1x1 cube centered at (0,0,0).


Platforms: Matlab

x=[i j k]y=[i j k]now run the function anglevec(x,y)you will get the result as the angle between the two vectors.


Platforms: Matlab

h = StemBar(x,y,z,color,width)Function is similar to stem3, but instead of lines with markers plotting3d barsUsage:StemBar(x,y,z) - draws bars with a height z at the values specified in xand y. x, y, z - should be a vectors.StemBar(z) - draws bars with a height z at the xy-planeStemBar(...,color)...


Platforms: Matlab

PP = PCHIPD(X,Y,D) provides the piecewise cubic polynomial which interpolates values Y and derivatives D at the sites X. This is meant to augment the built-in Matlab function PCHIP, which does not allow the user to specify derivatives.X must be a vector.If Y and D are vectors, then Y(i) and D(i)...


Platforms: Matlab

Converts a regular mesh defined by X,Y and Z into a regular triangulation. The output is patch data (triangles) in the faces d-deDUFd-deDt and vertices d-deDUVd-deDt format. The quadrilateral mesh faces are converted to triangles by splitting the faces into triangles according to the setting...


Platforms: Matlab

[a,b,c] = InverseKinematicsAM(x,y,z)This function finds the joint configurations for the waist, shoulder and elbow of the RA-01 robotic arm made by Images SI, Inc. It takes in three inputs which are the specifications of the x, y and z positions of the centre of the gripper of the robotic arm....


Platforms: Matlab

This function computes the (x,y) locations where two curves intersect. The curves can be broken with NaNs or have vertical segments. It is also very fast (at least on data that represents what I think is a typical application).


Platforms: Matlab

Tristan UrsellSub-pixel Resolved 2D ConvolutionMarch 2012 matout=matoverlay(mat1,mat2,x,y); This function takes an input matrix mat1 and creates an image of thematrix mat2 at the position (x,y) in mat1. If (x,y) are floats, then theimage is a sub-pixel bilinear representatoin of mat2 at position...


Platforms: Matlab

Mutual information I(X,Y) measures the degree of dependence (in terms of probability theory) between two random variables X and Y. Is is non-negative and equal to zero when X and Y are mutually independent. Conditional mutual information I(X,Y|Z) is the expected value of I(X,Y) given the value of...


Platforms: Matlab

PLOTINSET(X, Y, POSITION, WINDOWSIZE, 'xlimit', xlimit, 'ylimit', ylimit) creates a plot of vector Y versus vector X, and on top of it, creates an inset plot of size specified by WINDOWSIZE in the current figure, positioned at the location specified by POSITION.Bottom left corner is the starting...


Platforms: Matlab