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Dear all,

I want to show a heatmap (e.g. hm) on another image (e.g. im), how can I do this? I have tried the following codes:

imagesc(hm), colormap(hot);
hold on, h=imagesc(im);
alpha(h, 0.5);

However, the displayed hm and im have >> more

Original post by Jani Korhonen

Last post by - 2 Apr 2015 - 4 replies


how to convert images to pattern

Original post by aji hady candra

Last post by aji hady candra - 2 Apr 2015


I have a very basic question. I want to end the cut off frequency for a butterworth filter but Matlab only allows number between 0 and 1 which makes no sense.

"The cutoff frequency
    Wn must be 0.0 < Wn < 1.0, with 1.0 corresponding to
    half the >> more

Original post by Mostafa

Last post by Nasser M. Abbasi - 1 Apr 2015 - 1 reply


Hi everyone,
I'm fitting an adaboost model to some dataset with decision tree (CART) as the weak learner. But what matters to me more than the accuracy is the wait of the trees and each tree itself. In other words, for each tree I would like to know the w >> more

Original post by Hamid H.

Last post by Hamid H. - 1 Apr 2015


On 4/0/15 6:24 AM, Max wrote:
> I was glad to hear that Mathworks has finally corrected their array
> indexing scheme to start with 0 instead of 1, so they're now
> compatible with all the other languages out in the real world.
> Apparently they knew al >> more

Original post by robert bristow-johns...
Last post by Nasser M. Abbasi

- 1 Apr 2015 - 4 replies


Hi, a question from a newbie.

I want to sum matrix elements with greater than 2 (>2) and less than 8 (<8) in this matrix
Matrix a = [1 2 3; 4 5 6; 7 8 10]

Any help appreciated
Thank you very much!

Original post by yzfmonster

Last post by Bruno Luong - 1 Apr 2015 - 4 replies


I'd like to know if there's someone out there that uses a USB3 camera with matlab that has a high rep rate (say >90 fps) and is actually manage to see that repo rate. The reason I ask is that I have a gige camera (prosilica gx1050) that is supposed to run >> more

Original post by natan

Last post by natan - 1 Apr 2015 - 4 replies


Hi all,

I am trying to add a title to my graph's legend, is this
possible? I have tried a few alternatives and it seems like
this is not supported, the easiest way seems to add a
textlabel at the top of the legend and pin it to the graph.
I figured th >> more

Original post by Karl Trumstedt

Last post by Yair Altman - 1 Apr 2015 - 5 replies


% 1. I don't recommend using ntstool for complicated problems until you are more
% experienced. The command line script it generates offers so many options that it
% obscures the most >> more

Original post by Greg Heath

Last post by Peta - 1 Apr 2015 - 11 replies


There is something funky going on with my VideoReader.
Here is what I did

vobj = VideoReader('A.avi');

(ans =64768)


I got the following error:
      Error using VideoReader/read (line 86)
      The frame index >> more

Original post by Sisi Ma

Last post by David Jule Mack - 1 Apr 2015 - 4 replies


How can I obtain the optimal basis (set of basic variables) from solution?

Original post by Harvey Greenberg
Last post by Harvey Greenberg - 1 Apr 2015


Is there a simple way to write a table to a text file so that it is formatted the same way that it appears at the command line when you enter disp(myTable)?

It seems that this would be a sensible Name-Value input to the writetable() function.

Original post by Bruce Elliott

Last post by Bruce Elliott - 1 Apr 2015 - 1 reply


Frens kindly mail me the matlab codes for finding freqency & displacement of cantilever beam using fininte element method for laminated composite cantilever beams

Original post by Premendra Pradhan

Last post by Premendra Pradhan - 1 Apr 2015


I was wondering if anybody has a fast method for accurately estimating
the frequency of a single tone in noise. The signals I have are
pretty clean - around 30-50 dB SNR, and are quite large (on the order
of a million samples). The signals are complex b >> more

Original post by John Mann
Last post by Dinesh

- 1 Apr 2015 - 9 replies



I have a cell array of the following form:
a = [1, 2, 3, 4]; [5, 6, 7]; [8, 9, 10, 11, 12]
and I would like to turn that into
b = 1, 2, 3, 4;
5, 6, 7;
8 , 9, 10, 11, 12
and my question is how? I already tried a lot of things:
1. various variations of >> more

Original post by 107

Last post by Greg Heath - 1 Apr 2015 - 4 replies


I have one structure X with fields X.a and X.b and another one Y with fields Y.c and Y.d. Is there a way to create a new structure Z with fields Z.a, Z.b, Z.c, Z.d that have the same values as the corresponding fields in X and Y, but to do so without expl >> more

Original post by Bruce Elliott

Last post by Bruce Elliott - 1 Apr 2015 - 2 replies



I am trying to solve the following ODE:
so I decided to convert it into a system:

The real initial conditions where y(0)=0,y'(0)=1,y''(0)=0. However, I made a small perturbation >> more

Original post by David

Last post by David - 1 Apr 2015


Is it possible to change the uitabgroup's tab color or font color? e.g. I set the background color of uitabgroup to dark, so it would be better to set the color of tabs also to dark than the default light gray color.


Original post by Song

Last post by Song - 1 Apr 2015


I am currently working on my final year project and am really hoping
that someone could provide me with a guide or an example source code
on converting a .dat file to a data file .wavt.

Thank you
rui cota

Original post by rui_cota
Last post by Oliver Hughes

- 1 Apr 2015 - 2 replies


Does anyone know of a good Converter/Reader for CED files which are normally made by JVC Camcorder?????

Original post by ROSE MEITINGER

Last post by ROSE MEITINGER - 1 Apr 2015



I would like to plot intensity of a specific region in my image. I have 2 aligned images and i want to plot the intensity of the overlapping region example a circular spots that are overlapping.

I have tried improfile but that is not what I want. I >> more

Original post by Arwa Fiaz

Last post by Arwa Fiaz - 1 Apr 2015 - 1 reply



I'm trying to solve 2 ode's simultaneously, with initial conditions @W = 10, X=0 & y=1. I feel like I might be entering in the initial conditions incorrectly, or otherwise have something not working in the code.

The two eqns are:
dX/dW = (k*CA0^ >> more

Original post by Laura Ostering

Last post by Torsten - 1 Apr 2015 - 1 reply


I have used SURF algorithm for Automatic image registration (AIR). It gives good result with CCD images. Now I want to perform AIR for CCD and IR images. But SURF is not giving good result with CCD and IR image.
Can any one suggest some method for automa >> more

Original post by Shashikant .

Last post by Shashikant . - 1 Apr 2015 - 2 replies


How do i get an "int16" from 2 separate bytes?
Let me explain:

I am trying to read binary data from a sensor.
It is sending 3 times a 16 bit signed value followed by a 1 byte carriage return. total 7 bytes.

To simulate this i send from 1 matlab script: >> more

Original post by Harmen

Last post by Bruno Luong - 1 Apr 2015 - 1 reply


I define three variables: syms t x(t) v(t)

Position is a function of time, and whose derivative is velocity.

I define some function f: f = cos(x)

When I take the derivative of f: diff(f) => -D(x)(t)*sin(x(t))

What I want to happen, is for MATLAB to r >> more

Original post by Adam

Last post by Nasser M. Abbasi - 1 Apr 2015 - 1 reply

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