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Biswarup Dutta

Active since 2017

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I have four peaks: P, P+1, P+2, P+3 in the image below. I need to make P vs P+1, P+1 vs P+2 poincare plot. How can I do it? Please help me out. The .mat file is attached.
The program to find the peaks are as follows: clc a=importdata('biplab chaki.mat'); b=a.data; x=b(25000:30000,1); ...

7 years ago | 0 answers | 0

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Question

I have two .mat files containing amplitude of normal & abnormal respiration. I would like to do Poincare plot to represent a section of two signals in the same plot (or the phases of both of them). Please help me out. Files are attached.
My objective is to do a Poincare plot to represent a section of two respiration signals (Normal & Abnormal) in the same plot (or...

7 years ago | 0 answers | 0

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Question

I have two graphs (image below). I want to do a 3-D contour plot which will represent the difference in characteristics of these two graphs.How can I do that? Please help me. Two .mat files are attached.
I have plotted following two graphs with this code: <</matlabcentral/answers/uploaded_files/74243/Normal-vert.jpg>> cl...

7 years ago | 1 answer | 0

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Question

How to get the value and index of the point where the plot ends (Marked by an arrow in image below) and display it? I have used 'find' command but it did not help. Please help me out. .mat file is attached.
My code: clc clear close all a=importdata('Biswarup_rest.mat'); b=a.data; x=b(32580:36100,1); [val, idx] ...

7 years ago | 1 answer | 0

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Question

I am trying to find the max peak of the graph (image below) without using 'findpeaks' syntax. Please help me out. The .mat file is attached.
I am using the following code to plot the graph: clc a=importdata('robin roy.mat'); b=a.data; x=b(22000:25830,1); ...

7 years ago | 2 answers | 0

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Question

I am trying to shade two area (Area A and B in the image below) under a curve with two different colours. Please help me out. mat file is attached.
As per my code, whole curve area is becoming green. I am trying to mark Area-A as green & Area-B as red. Code- clc a=im...

7 years ago | 1 answer | 0

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Question

I am trying to eliminate the negative Y-axis (-0.2 portion in the image below). So that the Y-axis of the graph starts from zero. I have attached the .mat file. Please help me out. Here is my code:
clc a=importdata('robin roy.mat'); b=a.data; x=b(22000:25830,1); plot(x); x(x<0)=[]; findpeaks(x); findpe...

7 years ago | 1 answer | 0

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Question

I am trying to find the area as a part of a graph(Area-A and Area-B in the picture below). However, when I am using "trapz" function, it is not giving any output. Code is mentioned below and .mat file is attached. Please help me out.
<</matlabcentral/answers/uploaded_files/72171/Graph.jpg>> clc; a=importdata('anirban normal.mat'); b=a.data; x=b(2...

7 years ago | 1 answer | 0

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