Matlab

Surface contour plot using lat/long data
I have a datum point for 10 different stations with their respective lat/long. I am trying to create a contour map based on the different values for each location. For some reason MatLab wants to use my values as if they are a change in the z-axis when I use contour,interp2, meshgrid.... All the points I have represent... 13 Jul 2010 23:01

An exact 1-D integration challenge - 65 - (sqrt, cos)
An exact 1-D integration challenge - 65 - (sqrt, cos) Hello, int(cos(((sqrt(4+9*z^2)-3*z)/2)^(1/3)- ((sqrt(4+9*z^2)+3*z)/2)^(1/3)), z= 0..1); ? Cheers, Vladimir Bondarenko Co-founder, CEO, Mathematical Director http://www.cybertester.com/ Cyber Tester Ltd. -----------... 11 Jul 2010 13:45

Building an array
I would like to build an array of unspecified length by using the following input method: input('Input a value for n greater than or equal to 1. If complete enter 0 '); The length of the array is to specified and the array completed by entering zero. Can this be done? ... 10 Jul 2010 14:54

how to calculate DC gain of Transfer Fucntion
How find DC gain of both G(s) and G(z) . G(s) is transfer function in continuous domain and G(z) in discrete domain. G(s)= 10(s+1)/(s^2+s+10) I have calculated G(z) by Matlab clc s=tf('s'); G=10*(s+1)/(s^2+s+10) T=0.01; G_d=c2d(G,T,'zoh') grid on pzmap(G_d); What he mean by DC gain. How to cal... 10 Jul 2010 13:48

Bar graph and line graph
I have a bar graph, and would like to transform it in a line graph, like this: http://i26.tinypic.com/30jnw1w.jpg The x dots are the middle value of each bar. Is there a function that does that? ... 10 Jul 2010 16:00

Remove small objects from binary image without erode.
"kinor " <kinor.removethiswithdot(a)gmx.de> wrote in message <hgb63f$20c$1(a)fred.mathworks.com>... "Ironic Prata" <lixodoironic(a)hotmail.com> wrote in message <hg99es$1ou$1(a)fred.mathworks.com>... Is there a function that removes objects binary image based only on their pixel area? I want to maintai... 10 Jul 2010 13:48

Importing data and plot.
Hello, I have a series of data composed by {X Y Z U_X U_Y U_Z PRESSURE} I would like to load in Matlab and create the curl of the velocity field (time indipendent). The domain is X=1...680, whereas Y and Z go from 1...73 The file goes from X=1...680 and Y and Z equal to 1, then reached X=680 Y increase of one ... 10 Jul 2010 16:00

loglog plot with zero order interpolation...
Hi.. I use "stairs" command to plot Zero Order Hold plots. But while plotting log values from it, it shows the points on axises/axes as non exponential simple numbers (say n). What would I have to do if I wanted the points on axises as 10^n (as with "loglog" plots)?? Thanks ... 10 Jul 2010 16:00

Any way to 'sort' boundary nodes after delaunay triangulation ?
Matlab's delaunay command is convienient for grid generation, after each triangulation, every node will have a label/order (to indicate the 1st node, the 2nd node etc.). But on the boundary the order is usually terrible. For example, if you triangulated a circle, the label of boundary nodes counted clockwise one by... 10 Jul 2010 16:00

Matlab Compiler for GUI
Dear Matlab users I have an Access database. I have written a main GUI in matlab that opens other GUI menus that import data and analyse the data from the database. To the GUI's I have also written some function files. In all I have maybe 15 function files and 10 GUI function files in matlab. I want to create an exe... 18 Jul 2010 09:27