Answered

step respone, impulse response

s=tf('s'); kb=52; k1=156; k2=53; G1=10/(s+0.01); G2=G1/(1+kb*G1); G3=G2*k2*k1; G4=G3/(G3+1); subplot(2,1,1) impulse(G...

step respone, impulse response

s=tf('s'); kb=52; k1=156; k2=53; G1=10/(s+0.01); G2=G1/(1+kb*G1); G3=G2*k2*k1; G4=G3/(G3+1); subplot(2,1,1) impulse(G...

ongeveer 3 uur ago | 0

Answered

How can I do such a "countifs"(excel) process in Matlab?

You do it by logical indexing: A = randi(10,1,15) CountIf = numel(A(A>5)) gives: A = 9 7 4 10 1 5...

How can I do such a "countifs"(excel) process in Matlab?

You do it by logical indexing: A = randi(10,1,15) CountIf = numel(A(A>5)) gives: A = 9 7 4 10 1 5...

ongeveer 3 uur ago | 0

Answered

Dijkstra's Algorithm

You could make life easier using Matlab inbuilt graphs functions. One example is <https://de.mathworks.com/help/matlab/ref/graph...

Dijkstra's Algorithm

You could make life easier using Matlab inbuilt graphs functions. One example is <https://de.mathworks.com/help/matlab/ref/graph...

ongeveer 17 uur ago | 1

Answered

How to find the sum of duration if the consecutive row elements are the same?

Save the durations you calculated using *|diff|* in an additional column so that the durations are correct for every row in your...

How to find the sum of duration if the consecutive row elements are the same?

Save the durations you calculated using *|diff|* in an additional column so that the durations are correct for every row in your...

ongeveer 18 uur ago | 0

Answered

How can i sum up 56-year daily precipitation data from APHRODITE (netcdf file) into monthly?

If you organize your data in a timetable you can use retime to sum up monthly.

How can i sum up 56-year daily precipitation data from APHRODITE (netcdf file) into monthly?

If you organize your data in a timetable you can use retime to sum up monthly.

ongeveer 22 uur ago | 0

Answered

Generate new column from cumulating another

A = (1:4)' A(:,2) = cumsum(A) gives: A = 1 2 3 4 A = 1 1 2 3 3 ...

Generate new column from cumulating another

A = (1:4)' A(:,2) = cumsum(A) gives: A = 1 2 3 4 A = 1 1 2 3 3 ...

ongeveer 23 uur ago | 1

| accepted

Answered

mathematical expression from string input

https://de.mathworks.com/help/symbolic/str2sym.html >> fun = str2sym("(sin(sqrt(x)+a) * e^sqrt(x)) / sqrt(x)") fun = (e^...

mathematical expression from string input

https://de.mathworks.com/help/symbolic/str2sym.html >> fun = str2sym("(sin(sqrt(x)+a) * e^sqrt(x)) / sqrt(x)") fun = (e^...

1 dag ago | 1

Answered

Solve formal equation and get the solution with these variables

syms i1 i2 ib v1 v2 hie hre hfe hoe hfb eqns(1) = i1==-ib-hfe*ib+(v1-v2)*hoe; eqns(2) = i2==hfe*ib+(v2-v1)*hoe %ib==-v1/hie...

Solve formal equation and get the solution with these variables

syms i1 i2 ib v1 v2 hie hre hfe hoe hfb eqns(1) = i1==-ib-hfe*ib+(v1-v2)*hoe; eqns(2) = i2==hfe*ib+(v2-v1)*hoe %ib==-v1/hie...

1 dag ago | 0

| accepted

Answered

Importing a table with unknown number of rows

I dont think it is needed to specify this, using readtable function. I never used this option to import a .csv-file as table in ...

Importing a table with unknown number of rows

I dont think it is needed to specify this, using readtable function. I never used this option to import a .csv-file as table in ...

1 dag ago | 0

Answered

Problem with solution seemingly simple linear system of equations [0x1 sym]

rewriting the system to matrix shows that this system has no solution, due to inconsistence: d=32; %mm - Srednica tłoka p1=0.5...

Problem with solution seemingly simple linear system of equations [0x1 sym]

rewriting the system to matrix shows that this system has no solution, due to inconsistence: d=32; %mm - Srednica tłoka p1=0.5...

2 dagen ago | 0

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Answered

Integration using trapz method

1 missing bracket and you missed to define dx: d = 30; E0=8.85e-12; c=.1; dx = 0.1; a = 0; b = 1; x = a:dx:b; N = lengt...

Integration using trapz method

1 missing bracket and you missed to define dx: d = 30; E0=8.85e-12; c=.1; dx = 0.1; a = 0; b = 1; x = a:dx:b; N = lengt...

2 dagen ago | 0

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Answered

Meshgrid fo variables in complex equation

You might want to try fimplicit3: syms f(x,y,z) f(x, y, z)=2*x+3*y+4*z==0 fimplicit3(f) or an even more complex example: f(...

Meshgrid fo variables in complex equation

You might want to try fimplicit3: syms f(x,y,z) f(x, y, z)=2*x+3*y+4*z==0 fimplicit3(f) or an even more complex example: f(...

3 dagen ago | 1

| accepted

Answered

How to split an cell array of two numbers into two columns

YouWant = [m5{:}]'

How to split an cell array of two numbers into two columns

YouWant = [m5{:}]'

3 dagen ago | 0

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Answered

How to calculate matrix M*T=T

syms T2 T3 M = [1., 0, 0, 0;... 0.5, 0, 0.5, 0;... 0, 0.5, 0, 0.5;... 0 0 0 1.] T = [500; T2; T3; 300] B =...

How to calculate matrix M*T=T

syms T2 T3 M = [1., 0, 0, 0;... 0.5, 0, 0.5, 0;... 0, 0.5, 0, 0.5;... 0 0 0 1.] T = [500; T2; T3; 300] B =...

3 dagen ago | 0

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Answered

how would i change an undirected network into a directed network on matlab?

here is a small example: A = [0 0 1; 0 0 1; 1 1 0] ug = graph(A) B = zeros(size(A,1)) B = B + triu(A) dg = digraph(B) ...

how would i change an undirected network into a directed network on matlab?

here is a small example: A = [0 0 1; 0 0 1; 1 1 0] ug = graph(A) B = zeros(size(A,1)) B = B + triu(A) dg = digraph(B) ...

12 dagen ago | 1

Answered

Simplify a symbolic expression

syms s T=21.0325 L=3.5890 X=(0.6*T)*((s+(1/L))^2)/s vpa(expand(X),10)

Simplify a symbolic expression

syms s T=21.0325 L=3.5890 X=(0.6*T)*((s+(1/L))^2)/s vpa(expand(X),10)

12 dagen ago | 0

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Answered

which optimization method should I use?

Following your statements surrogateopt appears to be the correct choice.

which optimization method should I use?

Following your statements surrogateopt appears to be the correct choice.

27 dagen ago | 0

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Answered

Invalid array indexing. column 19.help

epsilon(i)(xi2(i)((1-epsilon(i)) is not allowed in Matlab, do you mean?: epsilon(i)*(xi2(i)*((1-epsilon(i))

Invalid array indexing. column 19.help

epsilon(i)(xi2(i)((1-epsilon(i)) is not allowed in Matlab, do you mean?: epsilon(i)*(xi2(i)*((1-epsilon(i))

27 dagen ago | 1

| accepted

Answered

Matlab Code (Reinforcement Learning in Finance by Alex Roumi, MathWorks)

The code has never been published. Usually the code used in webinars is published at file exchange, but this was a presentation ...

Matlab Code (Reinforcement Learning in Finance by Alex Roumi, MathWorks)

The code has never been published. Usually the code used in webinars is published at file exchange, but this was a presentation ...

28 dagen ago | 0

| accepted

Answered

Error using horzcat:: Dimensions of array being concentenated are not consistent

There are 2 times the same values at different indices. To get only the first occourence: S=[.2046e17 .1381e17 .9249e17;.1679e1...

Error using horzcat:: Dimensions of array being concentenated are not consistent

There are 2 times the same values at different indices. To get only the first occourence: S=[.2046e17 .1381e17 .9249e17;.1679e1...

28 dagen ago | 0

Answered

How do i create a "Cut" at origin?

A = 5; M = 0.8; w = 1.2; fi = 30; t2 = 20; firad = fi*pi/180; t = linspace(0,t2,1000); y = M + A*sin(w.*t + firad); ...

How do i create a "Cut" at origin?

A = 5; M = 0.8; w = 1.2; fi = 30; t2 = 20; firad = fi*pi/180; t = linspace(0,t2,1000); y = M + A*sin(w.*t + firad); ...

28 dagen ago | 0

| accepted

Answered

Creating matrix with diag command

This is how a normal Matlab user would so this z = diag(1:10) z = 1 0 0 0 0 0 0 0 0 ...

Creating matrix with diag command

This is how a normal Matlab user would so this z = diag(1:10) z = 1 0 0 0 0 0 0 0 0 ...

28 dagen ago | 0

| accepted

Answered

not enough input data

Note that i used the same function for step2 like step1 to make it work - replace step2 with the correct function. Also i assume...

not enough input data

Note that i used the same function for step2 like step1 to make it work - replace step2 with the correct function. Also i assume...

28 dagen ago | 0

| accepted

Answered

Getting lowest postive number in array with it's index

S=[-6.3e7 -0.0001e7 inf;5.2545 -.2996e7 inf] m_idx = [min(S(S>0)), find(S==min(S(S>0)))]

Getting lowest postive number in array with it's index

S=[-6.3e7 -0.0001e7 inf;5.2545 -.2996e7 inf] m_idx = [min(S(S>0)), find(S==min(S(S>0)))]

28 dagen ago | 0

| accepted

Answered

Changing values in atable

% Example table with random data T = splitvars(table(randi(10,10,5))) T = 10×5 table Var1_1 Var1_2 Var1_3 ...

Changing values in atable

% Example table with random data T = splitvars(table(randi(10,10,5))) T = 10×5 table Var1_1 Var1_2 Var1_3 ...

29 dagen ago | 0

Answered

Is it possible to change the number of hidden layer in nprtool?

It is - indirectly - use patternet and then use a vector as input: net = patternnet(10); view(net) or if you need more hidden...

Is it possible to change the number of hidden layer in nprtool?

It is - indirectly - use patternet and then use a vector as input: net = patternnet(10); view(net) or if you need more hidden...

29 dagen ago | 0

Answered

ODE 45 step size changes the turning point

This is not a problem of Matlab, but to the misunderstanding how ode solvers in Matlab work. Read here: https://de.mathworks.co...

ODE 45 step size changes the turning point

This is not a problem of Matlab, but to the misunderstanding how ode solvers in Matlab work. Read here: https://de.mathworks.co...

ongeveer een maand ago | 0

| accepted

Answered

Check for missing argument or incorrect argument data type in call to function 'log'.

Für mich funktioniert es, wenn ich numerische Werte für die Variablen definiere: TP = 500; RP = 200; PP = 201; EPS = 100; A...

Check for missing argument or incorrect argument data type in call to function 'log'.

Für mich funktioniert es, wenn ich numerische Werte für die Variablen definiere: TP = 500; RP = 200; PP = 201; EPS = 100; A...

ongeveer een maand ago | 0