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# NN

##### Last seen: 2 days ago
95 total contributions since 2019

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Question

Matrix subtraction makes the model too slow
The below code makes the model too slow: Data(i,:)=Data1(i,:)-Data2(i,:); is there any alternative way to solve this ?

2 days ago | 1 answer | 0

### 1

Question

how can i avoid Nan in matlab expression and return 0
The below three expression gives three different values, and can someone advice me how can i avoid Nan values for 0 input and ...

3 days ago | 5 answers | 0

### 5

Question

how to do conditional statements using optimisation variables?
hi all, how can i perform logical comparison using optimisation variable ? I have tried this below code for optimisation using ...

4 days ago | 1 answer | 0

### 1

Question

how can i create sliding window matrix for a single column matrix
HI , I have a single column matrix of a solar forecasted output.How can i create a sliding window of the required size of the ...

8 days ago | 1 answer | 0

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Question

after initialising a diesel machine, does its power remains constant at initialised value in matlab.
after initialising a diesel machine, does its power remains constant at initialised value in matlab. I have initialised diesel...

8 days ago | 0 answers | 0

### 0

Question

Diesel generator Model in simpowersystem
I have initialised diesel generator to a load of 2.45 MW and after initialisation , my diesel generator produces excess power if...

9 days ago | 0 answers | 0

### 0

Question

Optimization problem Matlab _optimisation vector
What is the importance of optimisation horizon in optim prob usgae?How input parameters dimension can be set? Kindly advice

11 days ago | 0 answers | 0

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Question

Optimization problem _input dimension
While giving inputs to optimisation problem, how to set matrix dimensions of inputs like solar , load etc .i have 25 x 2 matrix ...

11 days ago | 0 answers | 0

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Question

Matlab optimproblem , optimvar
Hi, I am getting errors like this, when I use optimproblem and optimvar. Function 'optimproblem' not supported for code gener...

12 days ago | 1 answer | 0

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Question

Matlab function block error
Hi i am getting error for using matlab simulink function block ### Simulink cache artifacts for 'filename' were created in 'f...

13 days ago | 0 answers | 1

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Question

Undefined operator './' for input arguments of type 'cell'.
Hi , i am using the below command and getting the error: date_num2 = datenum(testdates)+table2array(Data(1:end,2))./24; ...

15 days ago | 0 answers | 0

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Question

importance of weights in optimization
Hi, This code written below is taken from matlab example , https://ww2.mathworks.cn/matlabcentral/fileexchange/73139-microgri...

16 days ago | 0 answers | 0

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Question

matlab optimisation problem _ constraint
Hi, this is a code from matlab optimisation problem given in the below link https://www.mathworks.com/matlabcentral/filee...

18 days ago | 1 answer | 0

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Question

Coefficient of determination , R2 from actual and predicted data
How can i find the Coefficient of determination , R2 from predicted and actual data ? How can i write matlab code for that

26 days ago | 0 answers | 0

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Question

hi Kindly advice how can i solve algebraic loop problem. Simulink cannot solve the algebraic loop containing 'march0604/Sub...

1 month ago | 0 answers | 0

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Question

how can i convert Principal component analysis(PCA) data back to original data ?
Hi all, i used the below code to reduce dimension suing PCA in steps, and how can i convert the output back to original data s...

1 month ago | 1 answer | 0

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Question

Losses in forecasting _cosine similarity class ,mean square logarithmic error , and huber class
How can i write the code for calculating cosine similarity class ,mean square logarithmic error , and huber class in matlab cod...

1 month ago | 0 answers | 0

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Question

initial SoC values _Matlab example
Hi, In the Matlab example https://www.mathworks.com/help/physmod/sps/ug/24-hour-simulation-of-a-vehicle-to-grid-v2g-system.html...

2 months ago | 0 answers | 0

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Question

Unable to change the date in .fig
Hi , i use this below code and not able to change the date from Dec 31 1899. .Fig image is attached.I would like to change the d...

2 months ago | 1 answer | 0

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Question

Matlab example file _SoC calculation
In the matlab example, https://www.mathworks.com/help/physmod/sps/ug/24-hour-simulation-of-a-vehicle-to-grid-v2g-system.html...

2 months ago | 0 answers | 0

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Question

Matlab look up table
Hi , i want to give the data of 50 vehicle's SoC (%) to look up table in simulink instead of varying 24 values of one SoC over...

2 months ago | 0 answers | 0

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Question

Matlab LOOK up Table
I have 50 data points and i have imported these 50 data points from matlab to look up table,and has given 50 breakpoints.i am si...

2 months ago | 0 answers | 0

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Question

What is the difference between Optimproblem and linprog
Please help, The below syntax creates a linear optimisation problem ? prob = optimproblem What is the difference of this abo...

2 months ago | 2 answers | 0

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Question

How battery energy is calculated in Microgrid Energy Management System (EMS) using Optimization
Can some one please explain how the battery energy is calcuated in the matlab example file, https://www.mathworks.com/matlabcen...

2 months ago | 1 answer | 0

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Question

Plot data against time
Hi, Kindly help to plot this workspace data , first column is formatted date and secnd column data against the date:Original da...

3 months ago | 1 answer | 0

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Question

how can I initialize two diesel generators in parallel in MATLAB ?
As detailed in the link below:, can i connect two diesel generators connected in parallel sharing load?What chaneg should i make...

3 months ago | 0 answers | 0

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Question

How can i plot two columns in different colors in MATLAB
can someone suggest me how to plot 2nd and 3 rd column in x axis in differnt colors as scatter plot against the 1st column...

3 months ago | 1 answer | 0

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Question

Convert date from number to format in matllab
I have original time and date format as mentioned below: 2/17/2020 9:48:18 AM I did forecasting using this , and after foreca...

3 months ago | 1 answer | 0

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Question

NPN Bipolar Transistor Characteristics
In the matlab example , NPN Bipolar Transistor Characteristics https://www.mathworks.com/help/physmod/sps/ug/npn-bipolar-trans...

4 months ago | 1 answer | 0

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Question

Importing data rom matlab to simulink
Hi , When i import time series data from matlab to simulink,it appears as individual data not as corresponding to time.(image ...

4 months ago | 0 answers | 0