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

[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!

[Hitesh Balaji]

Thank you so much. I was struggling.

Answer 5

[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 6

[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);