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# Nisar Ahmed

Last seen: 1 jour il y a Actif depuis 2020

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Question

How to perform these matrix calculations?
Hi, Q1: I have matriz z of size (101 97) and I want substract e.g., first row from second, then second from 3rd row and 3rd fro...

15 jours il y a | 1 réponse | 0

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Question

How to grid ride of constant values of data in plotting?
Hi, I have attached my data and plotting a figure by using following code: T= ones(size(Vp_time,1),1)*time'; X_dir=squeeze(X...

18 jours il y a | 1 réponse | 0

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Question

How to make subplots from following code?
Hi I am using following way to subplot my figures but it is not working. How can I subplot my figures: figure; subplot(121); ...

19 jours il y a | 1 réponse | 0

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Question

Resizing a Matrix in MATLAB?
Hi, Q.1: I have a matrix A of size 106 1 100. and after A = squeeze(A), the size is 106 100. Suppose I want unsqueeze A again t...

19 jours il y a | 1 réponse | 0

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Question

How to write a code for an equation in such a way that it add previous results repetitively?
Hi I want calculate distance between to points as: X1 = X(1:end-1); X2 = X(2:end); Y1 = Y(1:end-1); Y2 = Y(2:end); xi = 5...

21 jours il y a | 1 réponse | 0

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Question

How to save a data in another folder?
Hello, I have a folder name BSL_results and want to save following results into that that folder each time I run a code: The ...

27 jours il y a | 1 réponse | 0

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Question

How to add a constant value above a matrix in following code?
Hello P is a matrix of 100 106 and I am trying to add 20 constant values (say 0.25) above each row and 20 constant values (say ...

29 jours il y a | 2 réponses | 0

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Question

How to add constant values above and below of each columns of a matrix?
Hello, I have a matrix say VP of size 100 * 106 and I want to add 50 constant values above and 50 values belowhis matrix (50 va...

environ un mois il y a | 1 réponse | 0

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Question

How plot data as histograms?
I have following data as: [numb] = xlsread('NorskPetroleum.xlsx'); Years = numb(:,1); Oil = numb(:,2); condensate= numb(:...

environ 2 mois il y a | 1 réponse | 0

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Question

How can I put a loop here?
Hi, Here is my code below, I want to compute and plot (del2,del) for each value of V. How can I make a loop here? V = [0.5...

environ 2 mois il y a | 1 réponse | 0

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Question

Can I make a plot (colormap) like this?
Can I plot like this, any function or package plz? imagesc([1:ntr], Time(:,1), PhiTime) colorbar; ylabel('Time (s)');set(g...

2 mois il y a | 1 réponse | 0

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Question

Error using horzcat Dimensions of arrays being concatenated are not consistent.
Hi, Please help me to solve this error? If I write my code for a single array, it works well. The code is VD = depth; rho = R...

2 mois il y a | 2 réponses | 0

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Question

How to re-scale a part of 2D matrix?
Hi Suppose Pe_OPT is a matrix of size 115 200 and I want to rescale the part between VD>1901&VD<1919. VD is vertical axist of ...

3 mois il y a | 1 réponse | 0

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Question

How to solve 'Error using image Complex values are not supported. Specify the color data as numeric or logical values.'
Hi I have attached my data S_OPT.mat having size SW_OPT (115 200) and VD (115 1); The problem is some array in SW_OPT are com...

3 mois il y a | 1 réponse | 0

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A répondu
How to plot colorbar and plot size different?
@Star Strider Here is my code to obtain Prob_vp0, Prob_vs0, Prob_rho0.....and are plotted against VD as: x2 = [1500:50:6000]'; ...

3 mois il y a | 0

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How to plot colorbar and plot size different?
Hi When I plot colorbar, it reduces the size of my actual plot. I have 5 subplot and each has a separate colorbar. How to fix ...

3 mois il y a | 1 réponse | 0

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Question

How to plot the 10th and 90th percentiles of the predictions?
Hi, I have attached a data having a (size of a is 115 75) and want to plot the 10th and 90th percentiles of the predictions. Ho...

3 mois il y a | 1 réponse | 0

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Question

How to save all the simulated iterations (output of loop) togather?
Hi, This is my code and each and five out parameters are vp0, vs0, rh0, qp0, qs0 each of size (115*50). I want to save out pu...

3 mois il y a | 1 réponse | 0

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Question

How to solve this issue?
Hi, I have 100 initial models say length of 115 each, and after running simulation I created 100 new models. I am running simul...

3 mois il y a | 1 réponse | 0

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Question

How to make data of equal array length?
Hi, I have following data and how I can make FD and AD of equal size of N? FD = 0:0.225399; AD = 0:0.004045; N = 1:1:115;

3 mois il y a | 1 réponse | 0

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Question

How to fix a shift issue after taking hamonic mean?
Hi everyone, In the figure below, the red curve (Mdry) is the harmonic average of blue curve Md by using moving mean of 4 value...

3 mois il y a | 1 réponse | 0

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Question

How to compute harmonic average on the blocks of an array?
Hi, I have attached the data Mmin, I want to compute the harmonic average of first 4 values and then next 4 and so on. In short...

4 mois il y a | 1 réponse | 0

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Question

How to make colorbar maximum limits smae/uniform?
Hi everyone, I hope you are doing well. Attached is a figure and lesft size colorbar has max limit around 2.6 while right si...

5 mois il y a | 1 réponse | 0

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Question

How to change the sign of some particular values in an array/matrix?
Hi, I have some positive and -ve values in the curve below (data is also attached). How can I setup my code in such a way tha...

5 mois il y a | 1 réponse | 0

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Question

How to apply moving harmonic average on an array?
Hi, I have attached the data Kd_i = (115*1), I want to keep first and last values as it is in the data (or also shown in the f...

5 mois il y a | 3 réponses | 0

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Question

How to put a condition for equations in the computation
Hi I have attached a data 'al' varies from say 0.05 to 0.32. I want calculate d from al, but there are two equations for the d...

5 mois il y a | 1 réponse | 0

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Question

How I can adjust this x axis label incase of very small values of plot?
Hi, Due to small range of x axis values, the label is appearing as shown in the figure below. I have also attached the data. ...

5 mois il y a | 2 réponses | 0

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A répondu
How to plot a best fit curve to my data points?
@Alex Sha thank you for you answer, I am sorry I did not understand, do you mean, I need to compute f(x) = p1 + p2.*x + p3*x.^...

6 mois il y a | 0

Question

How to plot a best fit curve to my data points?
Hi, I have attached a data (inverted_qp.mat Inv_qpAVO freq;) and a plot between fre and Inv_qpAVO is shown below in red color. ...

6 mois il y a | 2 réponses | 0

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Question

How to add a verteical pad obove and below the curve and graph style and color displays?
Hello, I have two questions and the data is attached to the question: Q1) Lest hand side code is for the figure on right hand ...

6 mois il y a | 2 réponses | 0

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