# 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...

mer än 3 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...

mer än 3 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...

mer än 3 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...

mer än 3 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...

mer än 3 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...

mer än 3 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...

mer än 3 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 ...

mer än 3 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

mer än 3 år ago | 0

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Merge data by date

Check out groupsummary, specifically this example and this input argument

mer än 3 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...

mer än 3 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' ...

mer än 3 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: %...

mer än 3 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...

mer än 3 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...

mer än 3 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

mer än 3 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 [] ...

mer än 3 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...

mer än 3 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 ...

mer än 3 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...

mer än 3 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...

mer än 3 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...

mer än 3 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)...

mer än 3 år ago | 0

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How to plot phase and amplitude spectrum after doing fft?

See this example for in angle documentation

mer än 3 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...

mer än 3 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)

mer än 3 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...

mer än 3 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...

mer än 3 år ago | 0

| accepted