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How to solve a large sparse matrix Ax=b in load flow annlysis.
x=lsqr(A,b) Read about lsqr here

7년 초과 전 | 0

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Raising value to a power not working properly for some values
I have no idea what results you are expecting. But from the code its OK, there some results are differents. There may be exac...

7년 초과 전 | 1

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Histogram dips on normalization
The given image is quite large, therefor I have checkd with other images and Its works fine. Have you plot it individually? ...

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how to prevent cut-off of upper x-axis label
clc; clear all; close all; x = [1 2 3 4 5]; y = [2 3 4 5 6]; f = figure('Units', 'centimeters', 'Position', [0.1, 3, 15, 15...

7년 초과 전 | 1

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What is the difference between 'smooth' and 'filter' function for smoothing?
Smooth: Smooths the data in the column vector using using a moving average filter. Filter is the oparand and smooth is the resul...

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Reading a dat file; there is a bug
No error here check it. extention .txt A=importdata('C:\Users\sony\Desktop\test.txt', ','); A.data; A.data(A.data== -9999) = ...

7년 초과 전 | 0

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how to apply the arithmetic mean filter to a medical image to improve it? I have wrote this code but it did not work, there is an error which I could not figure it out.
Avoid multiple for loops, use inbuilt imfilter function for masking operation. The concept is same in all images. For image en...

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I have two images taken by projecting laser light onto a agar plate. We have taken images at starting point and after an interval of 20 minutes, where we cultured bacteria on it. Then we applied imsubtract(a,b), (b,a) both giving different answers ?
Yes, how you expect that both gives the same results? A-B !=B-A (!=>Not Equal) Note: Subtraction and division functions are N...

7년 초과 전 | 1

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How to display the corner output of harris corner algorithm in different colour?
I have attached the screenshot of my output her.I don't need this output in white colour.Instead I need it in some other colour....

7년 초과 전 | 0

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Add each element of a matrix
I supposed you are asking simple addition. Say matrix1, matrix2,matrix3,matrix4,matrix5 Matrix addition result the same size ma...

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Exporting plots from Matlab with DXF file
Try this one Link

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How I can evaluate the complexity of coded ofdm system
The question is quite subjective, there are multiple measures taken care of to find the complexity of a code. Also there are num...

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How to select rows with a particular value form one text file and write desired rows in new file?
k=load('test1.txt'); idx=k(:,3)<0.4; k(idx,:) %Next save the file as new name, hope you can do that. %Still if you need help...

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how to convert .grd file(ESRI grid format) to Geotiff in Matlab?
Have you tried this one? read the file by using arcgridread and write the file as following geotiffwrite(filename,read_data)...

7년 초과 전 | 1

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where do i need to consider time delay in code?
Time delay (pause) assign depends on your algorithm, why time delay? Regarding check delay, you can in multiple ways, one way u...

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How to write variables values on a figure?
This is an example t=1:.01:10; d=1; % here d is variable dim=[0.5, 0.2, 0.1, 0.1]; %From here you can location the position o...

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How can I detect green colors in an image?
See color detection is very vast topic, any color generation based on three components R, G,B. Green color also varies from lo...

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code for wiener filter
wiener2 %Image filter wiener2 Click here fro detail Inbuilt function avaliable.

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Comparing the first char of a string in a cell
d={'9S'}; p={'9D'}; result=strncmpi(d,p,1) if result=1, first character is same, else not same. Example: d={'PS'}; p={'Q...

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Labeling a set group in a bar graph: how do i get the group on the left have on label such as trial one and the right group labeled as trial 2
a= [2, 3] b= [4,5] bar_vals= [a;b] figure, bar(bar_vals) name={'trial1';'trail2'}; set(gca,'xticklabel',name);

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How to match two images in matlab?
You can do it number of ways matchFeatures 2. compare the two gray images, just subtract one image from other, see th...

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bitget function is not invoking output bits in a vector
Initiallize k=1, otherwise K is not defined k=1; %% k is counter and its chainging even more than (length(A)) for t = 1:1:leng...

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I need to adjust two different size x ray images using 2D transformation.how can i do it? here i attached example digital x ray image.
As suggested by @ImageAnalyst proceed your work. image1=imread('Filename'); % Filename e.g. 1.jpg, If image are dcm format, u...

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Rearrange matrix and combination issues
col1=xlsread('text.xlsx','B:B'); col2=xlsread('text.xlsx','D:D'); new_text=[col1 col2]; xlswrite('new_text',new_text);

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Im having trouble loading a program to explore the output using Plot Command
load handel sound (y,Fs) multiplier=0.10 ; noise=randn(length(y),1)*multiplier ; %% Explore This sound_w_noise=y+noise ; ...

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How do I add a condition where the input value of T must be within the upper and lower limit of the data?
clc clear load viscosity_data.dat; x=viscosity_data(1,:); y=viscosity_data(2,:); a = max(x); i = min(x); fprintf('Enter t...

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Why four parameters stick together for PDF and CDF?
May be PDF and CDF are same in that case

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How to get entropy values of different images to a graph?
I=imread('test.png'); I2=imread('test.jpg'); x=entropy(I); x2=entropy(I2); bar([x x2]); set(gca,'xticklabel'); title('Ent...

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i have 2 images of a same place , second picture is hazy. I want to estimate background of first image and get foreground objects or second image from its L*a*b image and then do illumination of both images. After that i want to fuse them to enhance
In your last comment,you have mentioned that you are interested to background extraction. From your above code, you are dealing ...

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imwrite() with PGM option actually write in PBM
Follow this way, its works to write the dicom in pgm format path_directory='dcm_sample_images'; % 'Folder name' original_files...

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