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# Voss

Last seen: Today Actif depuis 2013

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Accessing variable in a table, depending on another variable
% Create a table: is_node = false(12); is_node(2,2) = true; is_node(4,2) = true; is_node(6,2) = true; is_node(10,2) = true;...

environ 4 heures il y a | 0

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How do I substract like variables from each other
a = readmatrix("Book1.xlsx"); b = datetime(a(:,2),'ConvertFrom','excel'); N = size(a,1); c = duration(NaN(N,3)); for i = 1:N...

1 jour il y a | 0

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I get this error, ive already checked parenthesis.Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error.
There is a comma missing: f = figure ('position', [0, 0] scrz(3),scrz(4)); % ^^ missing a comma ...

1 jour il y a | 0

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Need help to plot frequency axis should be linear and cover the range 10 to 110 Hz in 1 Hz steps. Your vertical axis should cover from 0 to -40 dB
% File name: ee310 project.m clear all; close all; %Specify components. Rs=1000; C1=11.65e-6; C2=250.1e-9; C3=28.13e-6;...

1 jour il y a | 1

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reshape matrix with diffrent size
load('vecteur.mat') % stored vecteur in a mat file, to avoid defining it in the code again here SI = scatteredInterpolant(vec...

1 jour il y a | 0

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Shift elements in a 3D array
Here's an example with a 2x3x2 array, removing all the 9s and appending 0s: data = reshape(1:12,[2 3 2]) siz = size(data); id...

1 jour il y a | 0

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Which rows of a 2-column array contain elements of 1-column array.
ismember returns linear indices as its second output. You can use ind2sub to convert to row + column indices. a = [ 6208 ...

1 jour il y a | 1

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clc msg = "Vyber hodnotu: "; vyber = ["-10000" "3000" "15000" "4000" "-6000"]; n = input("Počet pohybů na účtu: "); choice =...

1 jour il y a | 0

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How to change scaling for different ranges of X-Axis inn figures?
Use set(gca(),'XScale','log') or semilogx.

1 jour il y a | 1

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How to plot a function F(a,b) having a matrix F (axb)
surf(phi,sigmap,syy)

1 jour il y a | 0

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How can I change all numbers in matrix to 1? except for 0
One way: M = randi(4,[5 5])-2 % a matrix with zero and non-zero elements M(M ~= 0) = 1 % replace non-zero elements with ones ...

2 jours il y a | 0

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Working with a cell of strings
Use string or cellstr. C = {"one";"two"} string(C) cellstr(C)

2 jours il y a | 0

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Element-wise set operations
C = A == B.';

2 jours il y a | 0

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Finite Element: Filling nxm matrix by extracting values from another nx1 matrix
V(2:5,2:5) = reshape(W,4,[]).';

2 jours il y a | 0

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Finding slope for the polyfit line
polyfit returns the coefficients in a vector, with the highest-degree coefficient first. Therefore, the slopes are the values of...

3 jours il y a | 0

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plotting 12 graphs in one figure
load data_matrix.mat data=SECTION_L; data(:,1:3)=[]; row=9; cleanup=data([1 2 3 row],:); % year range y1 = 1975; y2 = 201...

3 jours il y a | 0

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how to create a new variable based off an if else statement on one variable?
t = table(["cats";"dogs";"cats";"sheep"],'VariableNames',"animals") all_animals = ["dogs" "cats" "sheep"]; [~,idx] = ismembe...

3 jours il y a | 0

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Can I use colormap to set color of my cumulative area chart in area()?
area dioesn''t use the figure's colormap directly, but it does use the axes' ''ColorOrder' by default, so maybe something like t...

4 jours il y a | 0

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extract values from a table
It looks like, basically row 1 is year, row 2 is month, row 3 is day of month, and row 4 through the end are temperature data fo...

4 jours il y a | 0

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indeHow to index values from a cell array
data =readtable('EURUSD=X.csv'); disp(data) G = floor((0:height(data)-1)/20).' + 1; DataE20 = splitapply(@(Date,Open,High,Low...

4 jours il y a | 0

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how to use "randi" in specific case?
Maybe something like this (the example A requires at least 5 values, e.g., [10 15 20 25 30]): A = [ ... 0 0 1 0 0 0 0 0 0 ...

4 jours il y a | 0

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How to make certain indexes of a cell array empty?
pixelBlock{by + 1, bx + 1} = [];

4 jours il y a | 0

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How to initialize a table column to a character array?
% a table: filetext = table([1;2;3;4;5;6]) % append a column of all 'MET' on the right: filetext{:,end+1} = 'MET'

4 jours il y a | 0

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Custom heat maps- How to highlight a specific value in the heatmap
Maybe one of the following two approaches will be useful, depending on exactly what you want to see. First, make up some data: ...

4 jours il y a | 1

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How to plot amplitude values of a matrix (dimension 651 by 10) with colorcode

4 jours il y a | 0

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'This statement is incomplete' for a function with enough parameters
This error can happen when there is a syntax error within the function itself (not just the line defining the function signature...

4 jours il y a | 0

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Combining rows of each field within a structure
S = load('Combined_Structure.mat','ModOutRstance_interp_x_all'); new_struct = struct(); f = fieldnames(S.ModOutRstance_inter...

4 jours il y a | 0

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i did as u guys said but this error pops up im sorry for asking alot but i really need help
You've already read the file, a couple of lines before. Here: a = imread(fullfilename); After that line executes, a is a nume...

5 jours il y a | 0

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why when i import an image from my desktop the error says it doesnt exist plz help and thank u in advance
Use both output arguments from uigetfile to construct the full path name of the file: [filename,pathname] = uigetfile(); ful...

5 jours il y a | 0

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please can someone tell me what to do here what does it mean ? and does setappdata fall under a certain library i need to install for matlab plz help
setappdate(0,'filename',filename); % ^ this should be an "a". setappdata not setappdate

5 jours il y a | 0