Matlab

Error message about heatmap
Hi, I am working on a program to get a heatmap and somehow it worked yesterday but didn't work today by giving me some error message of: ??? Undefined function or method 'heatmap' for input arguments of type 'double'. The input of the heatmap function is: heatmap(variable, stress(1,:),stress(1,:)); where variable... 23 Apr 2010 17:36

avoid forloop
Is there a way to avoid the forloop here: for i=1:10000000 b(i)=matrix2num(a(i,:)); end ? Perhaps using cell arrays ? ... 28 Apr 2010 12:51

Subscripted assignment dimension mismatch on yahoo stocks
I have the following section of code in MATLAB, basically it reads the historical data of the given symbols. startdate = '01012010'; enddate = '20042010'; freq = 'd'; stocks = hist_stock_data(startdate, enddate, 'AAL.L', 'ABF.L', ... 'ADM.L', 'AGK.L', 'AMEC.L', 'ANTO.L', 'ARM.L', 'ATST.L',... 'frequency', fr... 24 Apr 2010 06:06

Regarding Matlab cwt function
"Wayne King" <wmkingty(a)gmail.com> wrote in message <hqi4fo$513$1(a)fred.mathworks.com>... "Ravi Rastogi" <raviras(a)gmail.com> wrote in message <hqhqc2$1sc$1(a)fred.mathworks.com>... Hi guys, Well i was looking at the matlab cwt (continuous wavelet transform) function, to understand how are the wavelet coe... 23 Apr 2010 17:35

Regarding Matlab cwt function
"Wayne King" <wmkingty(a)gmail.com> wrote in message <hqi4fo$513$1(a)fred.mathworks.com>... "Ravi Rastogi" <raviras(a)gmail.com> wrote in message <hqhqc2$1sc$1(a)fred.mathworks.com>... Hi guys, Well i was looking at the matlab cwt (continuous wavelet transform) function, to understand how are the wavelet coe... 23 Apr 2010 17:35

embed font export_fig
I recently discovered export_fig, which appears to be an excellent tool for creating nice vector figures. However, for compatibility reasons as well as personal preference, I would like to export the figure to pdf and/or eps with Myriad rather than Helvetica. However, when I try to create a pdf or eps using export_fig ... 24 Apr 2010 06:06

Searching xml elements by id
I'm reading an xml file using Matlab's xmlread-function. For some reason searching for elements by id doesn't work for me. Here's an example: File 'test.xml': <?xml version="1.0" encoding="utf-8"?> <Measurements> <Setup id="a"> <myval>3</myval> </Setup> <Setup id="b"> <myval>4</m... 23 Apr 2010 17:35

adding TFs in Matlab
I want to add 2 transfer function together in MATLAB. OL_num1=[1]; OL_den1=[1 1 1]; sys1=tf(OL_num, OL_den); OL_num2=[1]; OL_den2=[1 1 1]; sys2=tf(OL_num, OL_den); Sum = sys1+sys2 I'm confused on MATLAB is doing, b/c adding 2 transfer functions should not change the numerators. How is MATLAB adding the... 23 Apr 2010 17:35

coupled differential equations -> ode15s
Hi, I have a problem which is a hard nut to crack. Basically I have to coupled differential equations and I want to determine displacements (x and y), velocities (xp, yp) and acceleration (xpp, ypp) related to time. r is a function of displacement (x or y). capital letters are material constants. 2 coupeled di... 23 Apr 2010 17:36

Highly stiff model problem in SImulink
Hi, I'm doing a stiff model on Simulink and I'm having problem to solve it.The modelised system is a mass between 2 springs (one highly stiff and the other not stiff), NO DAMPER. The result is not valid since my input is a sine wave at 1 Hz and my output is the sum of 2 sines (a high frequency one that is... 23 Apr 2010 17:35