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ANKUR KUMAR


Last seen: 1 day ago

NASA IMPACT

224 total contributions since 2017

Researching with NASA IMPACT |
MATLAB for fun | Python for research |

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Answered
Does cell2mat work in Matlab 2019?
It is working well for me. C = {[1], [2 3 4]; [5; 9], [6 7 8; 10 11 12]} A = cell2mat(C) 1 2 3 4 ...

2 days ago | 0

Answered
Trying to add color gradient to patch(isosurface))
Not sure about the exact what you wish to plot. But you can give it a try to plot using imagesc, use the gray colormap to plot. ...

2 days ago | 0

Answered
Predetermine axis limits without plotting
You can give it a try to add small value to the maximum value of the array. It can either be 10% or 20% of the extreme. x_vals...

2 days ago | 0

Answered
How to average each row from two indivisual comlum vectors?
vector1=[1,2,3,4] vector2=[4,3,2,1] output= nanmean(cat(1,vector1,vector2))

2 days ago | 0

Answered
how to find derivative of a function and ploting the surface of function and its derivative
In order to plot a surface, you can use the below commands: [X,Y] = meshgrid(1:0.5:10,1:20); Z = sin(X) + cos(Y); surf(X,Y,Z)...

2 days ago | 0

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Changing input data sample from the same dataset
SInce you have not attached sample data, that is why I am generating some random dataset like yours. dataset=randi(5,23,6); dat...

2 days ago | 0

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Answered
Onramp problem 14.1 and 14.2 plotting problems
Few points I need to mention: 1) You are calculating R1_av as a function of u, so if you use the below chunk of code, it will p...

6 days ago | 2

Answered
How to change datenum to normal date format?
You can use this function from the matlab file exchange to read time from a ncetcf file in user specified format: https://in.ma...

6 days ago | 1

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ncreadtime
This function helps user to read the time variable in netcdf file in a specific matlab readable format

6 days ago | 0 downloads |

Answered
For loop for hilb matrix
for i = 5:5:40 output_mat=hilb(i); % if you wish to store in cell array, uncomment the below line output_mat_cell{i...

6 days ago | 0

Answered
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...

2 years ago | 0

Answered
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 ...

2 years ago | 0

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

2 years ago | 17 downloads |

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

2 years ago | 8 downloads |

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ncdispread( varargin )
Display and load all the variables of nc file

2 years ago | 3 downloads |

Submitted


nccreatewrite(varargin)
Create a .nc file

2 years ago | 8 downloads |

Answered
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....

2 years ago | 1

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

2 years ago | 0

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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...

2 years ago | 0

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Answered
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]);...

2 years ago | 1

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Answered
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 ...

2 years ago | 0

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Answered
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...

2 years ago | 0

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Answered
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...

2 years ago | 1

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Answered
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...

2 years ago | 0

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Answered
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 ...

2 years ago | 1

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Answered
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...

2 years ago | 1

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

2 years ago | 1

Answered
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...

2 years ago | 1

Answered
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...

2 years ago | 1

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Answered
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...

2 years ago | 2

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