# Sindar

### University of Colorado Boulder

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Highly Memory-Efficient Recursion

Do they need to be symbolic? That probably adds a decent cost Similarly, if you have many zeros, sparse matrices will store mor...

mer än 3 år ago | 0

How to take 100 samples of a plot.

First, what are you actually doing with M, Xdot1, etc.? Currently, the code overwrites them each N_m loop, without doing anythin...

nästan 4 år ago | 0

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Image Reconstruction using Radial Basis Function?

Some ideas for figuring out patches: % load an example (color) image corn_rgb = imread('corn.tif',2); % get pixel rows, pixel...

nästan 4 år ago | 0

How to create a plotmatrix from a cell?

A scatterplot matrix is for if you have several equally-sized columns that you want to plot against one another. That doesn't so...

nästan 4 år ago | 0

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How can I put grouped stacked bar plots together in one figure?

Try commenting out line 19 in the function file: figure it is probably what's interfering with your attempts to create subplot...

nästan 4 år ago | 1

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Loading EEG files in a loop

pathforsetfiles = fullfile(direc,'YYY') list ={'04','05'} for counter = 1 : length(list) inp{counter} = list{counter} su...

nästan 4 år ago | 0

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Import matrices with same name and dimensions from different Data

If you don't tell matlab what to do with the variables, it will simply overwrite them each time. There are a few options Stru...

nästan 4 år ago | 0

How to export a figure in Live Script?

Here's my wrapper function, with usage like save_myfig(gcf,'spectrum_1e12',{'png','fig'}) I've been using some variation for v...

nästan 4 år ago | 0

How can I get the averages of each day of multiple years?

Check out groupsummary, specifically this example and this input argument Also, this thread has some solutions related to leap ...

nästan 4 år ago | 1

Large nutrient data sets - how to plot individual data not as a plotted line

plot(x,y,'.') will plot each data point as a point, no connection. If you'd like a different shape, see here

nästan 4 år ago | 0

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Merge data by date

Check out groupsummary, specifically this example and this input argument

nästan 4 år ago | 0

Efficient Method for Multiple Gridded Interpolation

I don't know how fast it will be, but I think this'll work % lon and lat are read from a netcdf file lon = ncread('important_g...

nästan 4 år ago | 1

'LineWidth' parameter not affecting marker thickness of animated line

According to the documentation, 'LineWidth' should change the markers as well, so it may be a bug. Regardless, try 'MarkerSize' ...

nästan 4 år ago | 0

how to add labels to the elements of a vector.

One option: store things in a table. This particular setup may not be the most efficient, but hopefully it helps you start: %...

nästan 4 år ago | 0

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Find the equality of each value in the vector and cell array

% better test data A = {1;[];1;[1 4];3}; B = [1;4;10;4;3]; temp = zeros(length(B),1); for i=1:length(B) % isequal handl...

nästan 4 år ago | 0

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Overwriting information in a cell array

Braces access cell contents, allowing you to update (in this case, appending to the end and hoping it's a compatible shape) Bra...

nästan 4 år ago | 0

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Simulate single sine wave

Without the noisy signal? See sin documentation. With the signal (i.e. fitting to it), check out the answer to this question

nästan 4 år ago | 0

How can I fix "Index in position 2 exceeds array bounds" in for loop/ if statements?

Okay, I believe this code is equivalent to what you have, cleaner and without the error % pre-allocate with cell arrays of [] ...

nästan 4 år ago | 0

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This is function to help

Whether this can be vectorized is really a question about SD. It's possible it works on columns straight off: Val = SD(VImage,Q...

nästan 4 år ago | 0

What is missing from MATLAB #2 - the next decade edition

Ok, this is pretty minor, but: For common functions that return values as the first output and indices as the second, it would ...

nästan 4 år ago | 2

Indices of 2D array

data =[ 2 5 0 15 12 7 4 8 19 14 20 25 18 13 40 ]; reshaped_data = reshape(data,3...

nästan 4 år ago | 1

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Potting graphs with if else and for

If it throws an error, please include that information. If that error is what I'm seeing: Error using plot. Vectors must be th...

nästan 4 år ago | 0

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extracting information from tall timetable using a loop

Looks like you could do everything with groupsummary, assuming you can figure out how to define the bins G = groupsummary(TT,'T...

nästan 4 år ago | 0

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Trying to create a matrix by nesting a for loop in another for loop

No need for loops, except if effectiveness doesn't accept arrays % nx1 NTU = (2.5:0.1:3.5).'; for i=1:length(NTU) eff(i)...

nästan 4 år ago | 0

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How to plot phase and amplitude spectrum after doing fft?

See this example for in angle documentation

nästan 4 år ago | 0

Convert from cell of a table to an array

It gets tricky with different variable types and widths, but hopefully this helps. Worst case, you build up the new table elemen...

nästan 4 år ago | 0

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CREATE HISTOGRAMM WITH A SPECIFIC NUMBER OF CLUSTERS IN X AXIS

histogram: x = randn(1000,1); nbins = 5; h = histogram(x,nbins)

nästan 4 år ago | 0

Z must be a matrix, not scalar or vector - SURF

struct array is a terrible way to store this data. Does this do it? tbl = struct2table(b); surf(tbl.temperature,tbl.humidity,t...

nästan 4 år ago | 0

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Projectile motion using while loop Time of flight

Basically, the issue is that you are only updating a small portion of the relevant variables each time step. A few questions Is...

nästan 4 år ago | 0

| accepted