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Last seen: 2 months ago Active since 2012

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Question


How to count the number of different strings in a string list?
Dear All I would need some help on this: I have the following string list: AAA ABB CDE ABB CCR AAA FDR I would need to...

11 months ago | 1 answer | 0

1

answer

Question


How to assign NaN to consecutive elements of a vector, in intervals defined by a matrix
Hello there! supose we have a vector x=1:12 and we have a controling matrix as this: z=[2 4; 6 8; 10 11] We want to assi...

1 year ago | 1 answer | 0

1

answer

Question


Converting a matrix of strings to a txt file
Hi there! I have a mtarix of strings x_mtarix: x_matrix = 5×3 string array "A" "B" "C" "AA" "B...

2 years ago | 1 answer | 0

1

answer

Question


Converting mat files to daq format
Hello There We would like to convert mat files, or indeed matlab variables in the workspace, to the daq format. what we are l...

2 years ago | 1 answer | 0

1

answer

Answered
Detecting values in a vector that are different but very close to each other
Thakn you for your reply. Yes I want to keep the 4.1 since the next valu is 5 so, 5-4.1=0.9 which is over 0.1

2 years ago | 0

Question


Detecting values in a vector that are different but very close to each other
Hello there: I have a t vector (time, increasing values) like this: t=[ 1 1.1 2 3 3.1 4.1 5 6 7....

2 years ago | 3 answers | 0

3

answers

Question


File disappeared from the current working matlab folder
Hi there I was testing a matlab function in the current working folder (not a matlab program folder) and suddenly the file was ...

2 years ago | 0 answers | 0

0

answers

Question


How to delete items entries in a listbox in appdesigner
We have a listbox with multiple entries, and would want to be able to remove selected entries, for which we though we could use...

2 years ago | 0 answers | 0

0

answers

Answered
Using WindowButtonDownFcn in App Designer
Hi I cannot find the "WindowButtonDownFcn" upon on doing the callback, in my case, this is a callback for a listbox ui (inherit...

2 years ago | 0

Question


Real and Imaginary part of this function please
Hi there, I have this expression: syms R C w a real assume(R>0) assume(C>0) assume(w>0) assume(a>0) z=R/(1+(R*C)*(i*w)^a...

2 years ago | 1 answer | 0

1

answer

Question


Error using load: Cannot read file: inconsistent error message
I have saved mat files using the '-v7.3' like save('my_big_fat_file, 'TT_abc', '-v7.3'); my_big_fat_file has has about 3 GBy...

2 years ago | 0 answers | 0

0

answers

Question


Sorting a cell of strings using a certain character position
Dear all I have a variable called var= vart=[{'Ice011_L_3of3m.mat''}; {'Ice011_P_1of3m.mat'} ;{'Ice011_P_2of3m.mat'}] We woul...

3 years ago | 1 answer | 0

1

answer

Answered
grouping first (left column) and last (right column) of consecutive sequence of a Nx2 matrix
Many thanks it worked perfectely!! Best Regards

3 years ago | 0

Question


grouping first (left column) and last (right column) of consecutive sequence of a Nx2 matrix
Hi there We have a Nx2 matrix with pieces of consecutive values that we want to obtain the extreme left and right limits: A=[...

3 years ago | 2 answers | 0

2

answers

Question


load being 3x faster than importdata
We want to load big mat files (about 4gb) tried: tic; ee1=load('my_big_fat_file.mat'); t1=toc t1=81.3492 tic; ee2=im...

3 years ago | 1 answer | 0

1

answer

Answered
CWT design in simulink
Did you get any reply? Also interested

3 years ago | 0

Question


I have a two column matrix and want to eliminate the rows whose interval contain a certain value
Dear all I have a two column matrix such as: A=[12 44; 56 78; 81 100; 110 200; 210 300;450 500; 600 710] this matrix row...

3 years ago | 1 answer | 0

1

answer

Answered
Reading variables from a big matlab Table
Guillaume, thank you I have gone through all the steps you mentioned. Creating the tall data was time consuming t_tall=tall(...

3 years ago | 0

Question


Reading variables from a big matlab Table
Hello There we have about 45 big matlab Tables (average size 12 GByte each). Please note that thee are .mat files. We will be r...

3 years ago | 2 answers | 0

2

answers

Answered
Tell me this is not true: r2016b and CWT (continuos wavelet transform)
I know these things are quite subjective sometimes. But the concept of period (T) or frequency (F=1/T) of a periodic waveform i...

5 years ago | 0

Answered
Tell me this is not true: r2016b and CWT (continuos wavelet transform)
Dear Wayne Thank you for your reply, we always learn something from it. The wavelet area is quite demanding in many ways and th...

5 years ago | 0

Question


Tell me this is not true: r2016b and CWT (continuos wavelet transform)
I was checking out the mathworks site for the new version of the CWT function http://www.mathworks.com/help/wavelet/ref/cwt.ht...

5 years ago | 5 answers | 1

5

answers

Question


assigning a color to the same value when ploting multiple matrices
Hello There I am using imagesc to plot data sets of 16 matrices sized 256x1000 samples .each (data for one patient) I am usin...

6 years ago | 1 answer | 0

1

answer

Question


Applying a multistage filter to a signal, how?
Dear Readers Considering the filter explained in the mathworks documentation centre: Fpass = 0.11; Fstop = 0.12; Apass =...

7 years ago | 0 answers | 0

0

answers

Question


marginals and energy of the scalogram to match the signal
Hi there: I have been looking for some matlab code to compute the time and frequency marginals in the wavelet scalogram. Mor...

8 years ago | 0 answers | 0

0

answers

Question


Units of the wavelet scale
What are the units of the wavelet scale- a ? I always thought that it would be non-dimentional due to mathworks wavelet help: (c...

8 years ago | 0 answers | 0

0

answers

Question


using conofinf to plot the cone of influence in a imagesc(time, freq, coeffs)
Hello there I have done the cwt of a signal coeffs=cwt(signal, scales, wavelet) scales are obtained as this: freq=1:1: ...

9 years ago | 1 answer | 0

1

answer

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

9 years ago