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...

ungefär en månad ago | 1 answer | 0

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...

5 månader ago | 1 answer | 0

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...

5 månader ago | 1 answer | 0

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

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

5 månader 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....

5 månader ago | 3 answers | 0

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 ...

6 månader ago | 0 answers | 0

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...

9 månader ago | 0 answers | 0

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...

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...

9 månader 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...

ungefär ett år ago | 1 answer | 0

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...

mer än ett år ago | 0 answers | 0

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...

mer än ett år ago | 1 answer | 0

Answered

grouping first (left column) and last (right column) of consecutive sequence of a Nx2 matrix

Many thanks it worked perfectely!! Best Regards

grouping first (left column) and last (right column) of consecutive sequence of a Nx2 matrix

Many thanks it worked perfectely!! Best Regards

mer än ett år 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=[...

mer än ett år ago | 2 answers | 0

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...

ungefär 2 år ago | 1 answer | 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...

mer än 2 år ago | 1 answer | 0

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(...

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(...

mer än 2 år 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...

mer än 2 år ago | 2 answers | 0

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...

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...

mer än 3 år 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...

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...

mer än 3 år 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...

mer än 3 år ago | 5 answers | 1

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...

nästan 5 år ago | 1 answer | 0

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 =...

ungefär 6 år ago | 0 answers | 0

Answered

using conofinf to plot the cone of influence in a imagesc(time, freq, coeffs)

Anybody please?

using conofinf to plot the cone of influence in a imagesc(time, freq, coeffs)

Anybody please?

mer än 6 år ago | 0

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...

mer än 6 år ago | 0 answers | 0

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...

mer än 6 år ago | 0 answers | 0

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: ...

mer än 7 år ago | 1 answer | 0

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 ...

ungefär 8 år ago