Answered

Finding 4 closest values to a value in an array

use mink [~,idx] = mink(abs(data-find_point),5); data(idx)

Finding 4 closest values to a value in an array

use mink [~,idx] = mink(abs(data-find_point),5); data(idx)

1 year ago | 0

| accepted

Answered

How to get Y-values from X-values?

if you just want the Y value for the nearest point: [~,idx] = min(abs(X-certainX)); certainY = Y(idx); I don't see quite th...

How to get Y-values from X-values?

if you just want the Y value for the nearest point: [~,idx] = min(abs(X-certainX)); certainY = Y(idx); I don't see quite th...

1 year ago | 0

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Answered

How to increase fontsize of matlab IDE?

there is a workaround here that probably still works: https://www.mathworks.com/matlabcentral/answers/233543-how-to-change-the-...

How to increase fontsize of matlab IDE?

there is a workaround here that probably still works: https://www.mathworks.com/matlabcentral/answers/233543-how-to-change-the-...

1 year ago | 0

Answered

Can you plot polarplots so that theta zero location is at any arbitrary angle or are top left bottom right the only options?

something like this: top_angle = 24; % get current labels tt = thetaticks; % rotate angles so top_angle takes place of 90 t...

Can you plot polarplots so that theta zero location is at any arbitrary angle or are top left bottom right the only options?

something like this: top_angle = 24; % get current labels tt = thetaticks; % rotate angles so top_angle takes place of 90 t...

1 year ago | 0

Answered

How to plot many curves on a x-y-x axis system

sounds like plot3 is what you want, though I'll warn you that getting readable figures out is more an art than a science

How to plot many curves on a x-y-x axis system

sounds like plot3 is what you want, though I'll warn you that getting readable figures out is more an art than a science

1 year ago | 0

Answered

How do I display the first 20 numbers of the Fibonacci sequence?

you need to define the first two numbers manually, then start on the third f(1) = 0; f(2) = 1; for a=3:20 ... Also, it's un...

How do I display the first 20 numbers of the Fibonacci sequence?

you need to define the first two numbers manually, then start on the third f(1) = 0; f(2) = 1; for a=3:20 ... Also, it's un...

1 year ago | 0

Answered

Convert a non uniform cell array of cell arrays to matrix

(see comments on question for details not related to the title question) A1 = cell2mat(runData_struc{1}); A2 = cell2mat(runDat...

Convert a non uniform cell array of cell arrays to matrix

(see comments on question for details not related to the title question) A1 = cell2mat(runData_struc{1}); A2 = cell2mat(runDat...

1 year ago | 0

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Answered

Preallocating a variable that changes size every for loop iterations.

It's just a code suggestion, you can safely ignore it.

Preallocating a variable that changes size every for loop iterations.

It's just a code suggestion, you can safely ignore it.

1 year ago | 0

Answered

Saying Else is invalid syntax

you have two else's for the same if. Select it all and hit CTRL-i to smart indent to see: function [d1,d2,d] = dotangle(u,v) m...

Saying Else is invalid syntax

you have two else's for the same if. Select it all and hit CTRL-i to smart indent to see: function [d1,d2,d] = dotangle(u,v) m...

1 year ago | 0

Answered

Histogram with many data

Use tall arrays: https://www.mathworks.com/help/matlab/import_export/tall-arrays.html

Histogram with many data

Use tall arrays: https://www.mathworks.com/help/matlab/import_export/tall-arrays.html

1 year ago | 0

Answered

Data Cleansing in Tables

test_rejoined = outerjoin(test(:,[1 3 4]),test(:,[2 5]),'LeftKeys','id2','RightKeys','id','MergeKeys',true); separate table int...

Data Cleansing in Tables

test_rejoined = outerjoin(test(:,[1 3 4]),test(:,[2 5]),'LeftKeys','id2','RightKeys','id','MergeKeys',true); separate table int...

1 year ago | 0

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Answered

Fitting and smoothing the noisy curve

check out smoothdata and this guide

Fitting and smoothing the noisy curve

check out smoothdata and this guide

1 year ago | 0

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Answered

Hi, I am asking the user for input and the input should be either "AA" "Aa" or "aa". How can I validate the input using a while loop? I don't think my code works.Thanks!

You're requiring that it be all valid entries simultaneously parentOneA = input("Enter Parent 1's A Trait: ") % Error checking...

Hi, I am asking the user for input and the input should be either "AA" "Aa" or "aa". How can I validate the input using a while loop? I don't think my code works.Thanks!

You're requiring that it be all valid entries simultaneously parentOneA = input("Enter Parent 1's A Trait: ") % Error checking...

1 year ago | 0

Answered

Im putting in my equations wrong and i need help

should that be T1? also, replace 25 hardcoding with v0 (and 30 with T1) d1= (v0.*cosd(T2)/g).*((v0.*sind(T2))+sqrt((v0.*sind(T2...

Im putting in my equations wrong and i need help

should that be T1? also, replace 25 hardcoding with v0 (and 30 with T1) d1= (v0.*cosd(T2)/g).*((v0.*sind(T2))+sqrt((v0.*sind(T2...

1 year ago | 0

Answered

sub2ind gives error: Error using sub2ind (line 73) Out of range subscript.

sim_i_r was valid indices (integers greater than zero), but you changed it to invalid ones (zeros, decimals, negatives). Matlab ...

sub2ind gives error: Error using sub2ind (line 73) Out of range subscript.

sim_i_r was valid indices (integers greater than zero), but you changed it to invalid ones (zeros, decimals, negatives). Matlab ...

1 year ago | 0

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Answered

Index daily values in TT over many years to determine mean

This will create a table with the average for each day of the year (1-366). 'dayofmonth' might be preferable for just July data ...

Index daily values in TT over many years to determine mean

This will create a table with the average for each day of the year (1-366). 'dayofmonth' might be preferable for just July data ...

1 year ago | 0

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Answered

While starting Matlab icon on desktop, it is throwing error matlab.exe is moved or deleted.

delete the Matlab icon on your desktop type "Matlab" into your Start Menu search The top result should be the Matlab app/progr...

While starting Matlab icon on desktop, it is throwing error matlab.exe is moved or deleted.

delete the Matlab icon on your desktop type "Matlab" into your Start Menu search The top result should be the Matlab app/progr...

1 year ago | 0

Answered

Plot bar chart with log scale on y axis with different base

% set whatever base you want (incl. decimals) mybase = 2; % get current limits yl = ylim(); % convert to log-mybase scale y...

Plot bar chart with log scale on y axis with different base

% set whatever base you want (incl. decimals) mybase = 2; % get current limits yl = ylim(); % convert to log-mybase scale y...

1 year ago | 0

Answered

What frustrates you about MATLAB? #2

Livescript complaints First off, they've come a long way since I tried them on release. But, there are still some issues: Drop...

What frustrates you about MATLAB? #2

Livescript complaints First off, they've come a long way since I tried them on release. But, there are still some issues: Drop...

1 year ago | 1

Answered

How to store a matrix, A, in variable X, where X is also carrying a counter "i"

Simple way: add a third dimension, "pages": X(:,:,i) = A; But, if you only need the last iteration, it's better to store jus...

How to store a matrix, A, in variable X, where X is also carrying a counter "i"

Simple way: add a third dimension, "pages": X(:,:,i) = A; But, if you only need the last iteration, it's better to store jus...

1 year ago | 0

Answered

Permutations of array retaining sub-array groups together

I believe the best way to describe your arrays-with-subgroups is using cell arrays: my_array = {1 [2 3] 4} my_array = {...

Permutations of array retaining sub-array groups together

I believe the best way to describe your arrays-with-subgroups is using cell arrays: my_array = {1 [2 3] 4} my_array = {...

1 year ago | 1

Answered

Does MATLAB have functionality similar to Mathematica's Import function to import html tables?

check out htmlTableToCell on the file exchange, followed by cell2table

Does MATLAB have functionality similar to Mathematica's Import function to import html tables?

check out htmlTableToCell on the file exchange, followed by cell2table

1 year ago | 0

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Answered

Random shuffle of image pixels/ Image scrambling

You can use randperm to shuffle the indices randomly, then sort to get the indices for reversing it: % load in an image include...

Random shuffle of image pixels/ Image scrambling

You can use randperm to shuffle the indices randomly, then sort to get the indices for reversing it: % load in an image include...

1 year ago | 0

Answered

Nested loops and function output into a matrix inconsistency

It seems like your 'w' columns are supposed to correspond to q-r pairs. Currently, this isn't happening, so each q-r pair will f...

Nested loops and function output into a matrix inconsistency

It seems like your 'w' columns are supposed to correspond to q-r pairs. Currently, this isn't happening, so each q-r pair will f...

1 year ago | 0

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Answered

How to write special characters into an Excel cell?

If you can find the numeric code for the symbols, it should print with that. For example, this prints π | ϕ | μmol/kg T1.Proper...

How to write special characters into an Excel cell?

If you can find the numeric code for the symbols, it should print with that. For example, this prints π | ϕ | μmol/kg T1.Proper...

1 year ago | 0

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Answered

Adding a unit row to a table

% create example table T = array2table(magic(3),"VariableNames",["a";"b";"c"]); % define units T.Properties.VariableUnits = [...

Adding a unit row to a table

% create example table T = array2table(magic(3),"VariableNames",["a";"b";"c"]); % define units T.Properties.VariableUnits = [...

1 year ago | 0

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Answered

Changing empty array for peak width to zero

% preallocate default values pks1 = nan(25,1); loc1 = nan(25,1); width1 = zeros(25,1); prom1 = nan(25,1); for i=1:25 [...

Changing empty array for peak width to zero

% preallocate default values pks1 = nan(25,1); loc1 = nan(25,1); width1 = zeros(25,1); prom1 = nan(25,1); for i=1:25 [...

1 year ago | 0

Answered

How to select matrix column from minimum row value

distance_to_point = [2, 3, 4, 5; 6.8, 2.9, 6.1, 6.7] [~,idx] = min(distance_to_point(2,:)); new_point = distance_to_point(:,id...

How to select matrix column from minimum row value

distance_to_point = [2, 3, 4, 5; 6.8, 2.9, 6.1, 6.7] [~,idx] = min(distance_to_point(2,:)); new_point = distance_to_point(:,id...

1 year ago | 0

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Answered

Aquire random sampling of plot values

Assuming your two datasets share x values and are not absurdly massive, this direct method is probably faster % generate some s...

Aquire random sampling of plot values

Assuming your two datasets share x values and are not absurdly massive, this direct method is probably faster % generate some s...

1 year ago | 0