need solution during trainning

Hello all, I am new in this community .I need help to solve the below problem. please help me..

statement : You can add a custom function at the end of your script. For data preprocessing, the function should take the data returned from the datastore as input. It should return the transformed data as output.

function dataout = functionName(datain)
    % do something with datain
    dataout = ...
end

Given script :

letterds = datastore("*_M_*.txt");
data = read(letterds);
data = scale(data);
plot(data.X,data.Y)
axis equal
plot(data.Time,data.Y)
ylabel("Vertical position")
xlabel("Time")

Task ; -

Create a function called scale at the end of the script that performs the following operations:

data.Time = (data.Time - data.Time(1))/1000;
data.X = 1.5*data.X;

Because these commands modify the variable data directly, your function should use data as both the input and output variable.

Note that the third line of the script calls the scale function. Your script won't run until this function has been created.

Also note that local functions must be at the end of a script. This means you will be editing the script sections out of order in this interaction. The section headings show which section of the script to edit in each task.

Answer 1

[VISHAL]

letterds = datastore("*_M_*.txt");
data = read(letterds);
data = scale(data);
plot(data.X,data.Y)
axis equal
plot(data.Time,data.Y)
ylabel("Vertical position")
xlabel("Time")
function data = scale(data)
    data.Time = (data.Time - data.Time(1))/1000;
    data.X = 1.5*data.X;
end

[Manoj Kumar M]

is write answer

Answer 2

[Ravi kumar]

letterds = datastore("*_M_*.txt");
data = read(letterds);
data.Time = (data.Time - data.Time(1))/1000;
data.X = 1.5*data.X;
plot(data.X,data.Y)
axis equal
plot(data.Time,data.Y)
ylabel("Vertical position")
xlabel("Time")
data = scale(data);

[DGM]

Contrary to the instructions, this code performs all the tasks of the scale() function inline. Despite obviating the function call (and implementing no function), the nonexistent scale() function is still called, and it's called in a place where it would accomplish nothing even if it worked.

What's the point in posting answers that are demonstrably wrong?

Answer 3

[Hessel]

you should put the "sacle" function at the end

letterds = datastore("*_M_*.txt");
data = read(letterds);
data = scale(data);
plot(data.X,data.Y)
axis equal
plot(data.Time,data.Y)
ylabel("Vertical position")
xlabel("Time")

preprocds = transform(letterds,@scale)

function data = scale(data)
    data.Time = (data.Time - data.Time(1))/1000;
    data.X = 1.5*data.X;
end

[BRAJ KISHOR VERMA]

show wrong result

Answer 4

[Ali Al-nuaimi]

preprocds = transform(letterds,@scale)
function data = scale(data)
    data.Time = (data.Time - data.Time(1))/1000;
    data.X = 1.5*data.X;
end

[Logesh B]

answer is wrong

[Prayas]

answer is wrong sir please solve it

Answer 5

[L.J.]

data = readall(preprocds);
plot(data.Time, data.Y)

The first line of code needs to be surpressed, so just be sure to add a ; to solve the issue :) good luck

[JAMES S]

Not solviing

[구룽]

task 2 says it's incorrect :(

Answer 6

[Abdul Aziz Hisham Shubbak]

last all ::

function data = scale(data)
data.Time = (data.Time - data.Time(1))/1000;
data.X = 1.5*data.X;
data.X = data.X - mean(data.X);
data.Y = data.Y - mean(data.Y);
end

Answer 7

[Rhonnel S. Paculanan]

TASK 1

function data = scale(data)
data.Time = (data.Time - data.Time(1))/1000;
data.X = 1.5*data.X;
end

TASK 2

preprocds =transform( letterds , @scale ) % directly process the data storage
% Read all processed data
data =readall( preprocds ); 
plot( data . Time , data . Y )

TASK 3

preprocds = transform(letterds,@scale)
data = readall(preprocds)
plot(data.Time,data.Y)

TASK 4 (erase the content of Tasks 1 and paste this program)

function data = scale(data)
data.Time = (data.Time - data.Time(1))/1000;
data.X = 1.5*data.X;
data.X = data.X - mean(data.X);
data.Y = data.Y - mean(data.Y);
end

TASK 5 (erase the content of Tasks 4 and paste this program)

function data = scale(data)
data.Time = (data.Time - data.Time(1))/1000;
data.X = 1.5*data.X;
data.X = data.X - mean(data.X,"omitnan");
data.Y = data.Y - mean(data.Y,"omitnan");
end

[Luis]

Thank you very much!

Answer 8

[Md. Hasnat Karim]

put the scale function at the end of the script below the title "Tasks 1, 4, 5 ".

function data=scale(data)
data.Time=(data.Time-data.Time(1))/1000;
data.X = 1.5*data.X;
end

and write the following code for task 2

preprocds = transform(letterds,@scale)

[MAHESH BABU]

task 2 code error

[Kalagatla]

task 2 erroe

Answer 9

[Srivikasheetha]

letterds = datastore("*_M_*.txt");
data = read(letterds);

% Your existing code
plot(data.X, data.Y)
axis equal
plot(data.Time, data.Y)
ylabel("Vertical position")
xlabel("Time")

% Define the custom function 'scale'
function dataout = scale(datain)
% Perform the operations on the input datain
datain.Time = (datain.Time - datain.Time(1)) / 1000;
datain.X = 1.5 * datain.X;

% Assign the transformed datain to dataout
dataout = datain;
end

% Call the scale function and assign the output to 'scaled_data'
scaled_data = scale(data);

Answer 10

[RAMAKANT]

TASK

Create a function called scale at the end of the script that performs these operations:

data.Time = (data.Time - data.Time(1))/1000;

data.X = 1.5*data.X;

Because these commands modify the variable data directly, your function must use data as both the input and output variable.

Note that the third line of the script calls the scale function. Your script won't run until this function has been created.

Also note that local functions must be at the end of a script. This means you must edit the script sections out of order in this activity. The section headings in the script show which section of the script to edit in each task.

what is answer given task

[DGM]

Your question is already answered above.

The course itself will also give you hints and solutions if you click on the links.