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# ANKUR KUMAR

### NASA IMPACT

214 total contributions since 2017

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How to create nc file having lat, long, time, and 2D matrix
I hope this helps. [data]=xlsread('test.csv'); lat=data(2,2:end); lon=data(1,2:end); vardata=data(3:end,2:end); vardata(:,s...

environ un an ago | 0

Extract data by shapefile
You can use maskregion function, which mask out the data as per your shapefile. Example you can refer to for your convenience ...

environ un an ago | 0

Submitted

maskregion mask out the data in the nc file as per the shape file provided as the fourth argument

Submitted

cropregion
cropregion crops the data in the nc file as per the bounding % box provided as the fourth argument

Submitted

Display and load all the variables of nc file

Submitted

nccreatewrite(varargin)
Create a .nc file

How to save the results of NetCDF as .nc file?
You can use nccreatewrite function to create a nc file having all the required variables. Example: lon=(65:0.5:95)'; lat=(3:0....

environ un an ago | 0

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Saving data to .txt
Use dlmwrite to write into a ASCII file. A=magic(5) dlmwrite('sample.txt',A)

plus d'un an ago | 0

determining the value of an x corresponding to specifec y from the graph
Use polyfit to fit a linear line along all data points. It gives you a linear equation in terms of x and y. Just insert the valu...

plus d'un an ago | 0

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How to draw this 2 dimension figure (antenna feature) in Matlab?
I have just plotted your data simply. Check this out. figure('Units', 'Normalized', 'OuterPosition', [0, 0.04, 0.32, 0.96]);...

plus d'un an ago | 1

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How to sum two probability density functions?
"sum two of these pdfs and also substract both"? Are you pretty sure to add the pdfs? My suggestion is to first add data and ...

plus d'un an ago | 0

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Converting a 2d vector to a 4d vector
Let's take a random data A A=randi(10,30,2); Use permute to change into 4D B=permute(A,[3,4,2,1]); Now, B(:,:,2,24) and...

plus d'un an ago | 0

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How do i filter out certain values in a cell matrix using conditions for strings ?
You can use _contains_ to find the required letter. _contains_ gives true if the part of search string contains in the main stri...

plus d'un an ago | 1

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The size of X must match the size of Z or the number of columns of Z.
There are few mistakes I want to highlight. You have used, contour(lat,lon,z............. It should be contour(lon...

plus d'un an ago | 0

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How do I efficiently find the mean and covariance of a cell containing matrices with different rows?
Use concatenate to mix up all cells into one matrix. cat(2,C{:}); %you can use this only if number of rows must be same in ...

plus d'un an ago | 1

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How to present OBJ file (read as a mesh file) in a contour plot?
An example of creating a mesh is here, [X,Y] = meshgrid(-5:.2:5); R = sqrt(X.^2 + Y.^2); Z = sin(R)./R; mesh(X,Y,Z...

plus d'un an ago | 1

Placing multiple rectangles layout
figure rectangle('Position',[1 1 2 4],'Curvature',0) rectangle('Position',[5 2 4 3],'Curvature',0) rectangle('Positio...

plus d'un an ago | 1

Shapefile distorted on World Map
"I'm not sure if it is an issue with my shapefiles or with how I'm projecting". Its only because of projection, the continen...

plus d'un an ago | 1

Remove Data Outside Range
AA=temp(temp(:,1)>=4 & temp(:,1)<=20,:); There is no need to remove. Directly store the numbers which you need. [xx,yy...

plus d'un an ago | 1

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interp and interp3 give different size arrays
x0 = 1:100; y0 = 1:90; z0 = 1:100; data1=randi(10,90,100,100); %defining data over coarser resolution dimen...

plus d'un an ago | 2

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Animation using plot inside for loop
clc clear h=figure for n = 1:10 x_origin = 0; y_origin = 0; x_bob = 0.75*sin(n); y_bob = ...

plus d'un an ago | 1

Creating a report file in txt format and merging it with created text file

plus d'un an ago | 1

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Counting occurrences of each column in a matrix
Since you have not given any sample data, I am taking some random data. A=randi(50,50,50); A(A<=25)=0.4; A(A>25)=0.6;...

plus d'un an ago | 1

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Reading very heavy .txt files and writing into .xlsx
A=randi(10,50,50); %a random matrix to store in excel file xlswrite('sample.xlsx',A,'sheet1','A1') You can use 'sheet1' ...

plus d'un an ago | 1

Solved

Test if a Number is a Palindrome without using any String Operations
*Description* Given an integer _X_, determine if it is a palindrome number. That is, _X_ is equal to the _X_ with the digits ...

plus d'un an ago

Solved

Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

plus d'un an ago

Height and width of an image
Try this, A=imread('testing.jpg'); AA=rgb2gray(A); len=max(arrayfun(@(x) length(find(AA(:,x)~=255)),1:800)) bred=m...

plus d'un an ago | 1

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How to Write Output Figure with Table inside to Excel
"I have an image output with a table on my code" You can directly write this table in excel using xlswrite. A=randi(10,5...

plus d'un an ago | 1

Logarithmic color scale in 2d histogram
Use ruler.scale to set log axis in colorbar. contourf(randi(1000,25,25)) cx= colorbar(); cx.Ruler.Scale = 'log'; c...

plus d'un an ago | 1

Since you have not attached any sample file, I am giving you an example with a attached file. A=importdata('sample.txt'); ...

plus d'un an ago | 1

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