Matlab

how to control the accuracy of fzero
Hi, I need to solve an equation. each term is rather small, say, about 1e-13. I want the fzero solver to stop till the value of the function is smaller than 1e-19. I figure fzero don't take TolFun. Is there anything else I can do? Or I have to use another solver? Thank you very much. Best Yu ... 25 Jun 2010 14:16

reading in a 3D image saved as .TIF
Hi, I have a somewhat unusual problem. I need to read in a volumetric image saved as a .tif file, but I cannot index the individual slices of the image, eg. imread('image.tif',slice_i), as the entire 3D array had been saved as multichannel image. So the only feasible syntax is imread('image.tif'), which by default r... 23 Jun 2010 12:50

Thermocouple
Hello, I have been searching for a USB thermocouple that is compatible with MATLAB but I have been unable to come across. Can anyone suggest any to me. Thanks in advance. ... 23 Jun 2010 12:50

plot time values
hello all, I have a segment of code that plots a line graph of data that shows varying degrees over a segment of time (few hours during a day) here is my exact code: a=xlsread('file1.xlsx', 'A2:A1000'); b=xlsread('file1.xlsx', 'B2:B1000'); A=[a b]; Figure default %calls out default text display on graph ... 23 Jun 2010 18:24

Plot points on map as varying size dots or circles.
Hello, I know this function exists in matlab but i can't locate it's name. I'm plotting data on a map and each point across the map contains a different value (1 - 100%). I want display the values in the form of different size dots with a small dot = 1 and incrementally getting size dots larger up to 100. Which fu... 23 Jun 2010 12:50

Zero mean Circularly Symmetric Gaussian
Hi All, How shall I Generate Rayleigh Channel (h) with a variance other than 1 using randn. Kinldy also tell how can I verify it. The problem I am facing is N=10000; ******************************************************** h=rand(N,1)+j*randn (N,1)/sqrt(2) % gives var(h)=~0.5 and mean (real(h))=~0.5) ... 23 Jun 2010 16:11

Custom Colormap
I was wondering how you can make a custom colormap. I want a colormap that is a gradient of various green shades and a colormap that is a gradient of various red shades. Any help is appreciated, thank you. ... 23 Jun 2010 15:04

Gibson Bruck implementation
I have a hard time implementing Gibson Bruck (or the Next Reaction Method) described in "Efficient Exact Stochastic Simulation of Chemical Systems with Many Species and Many Channels" (J. Chem. Phys. 2000). Any help with be highly appreciated. Thanks! ... 23 Jun 2010 11:42

cell cycle effects in Gillespie
Hey guys, I would like to simulate the evolution of a chemical species over few cell cycles with Gillespie and I have a hard time implementing the cell cycle effects in this algorithm. Has anyone ever worked on this? Many thanks! ... 23 Jun 2010 11:42

matlab installation
Can we install 32 bit MATLAB without disabling an earlier installation of 64 bit MATLAB? ... 23 Jun 2010 11:42