Live Editor Output on the same line

조회 수: 32(최근 30일)
Stefano Zontone
Stefano Zontone 2020년 10월 23일
댓글: Stefano Zontone 2020년 11월 20일
I have a loop in my code and I would like to print the temperature value until it is outside a specific range.
while ~temp_ok
pause(1);
clc;
fprintf('Temperature = %0.1f °C \n',ReadTemperature);
if (abs(ReadTemperature - TargetTemperature) < TEMP_TOLERANCE )
temp_ok = true;
end
end
The output window shows a line for each loop iteration:
Temperature = 22.8 °C
Temperature = 22.8 °C
Temperature = 22.8 °C
...
Is it possible to program Live Editor to print the output strings to the same line? With the previous editor it was very easy...
  댓글 수: 2
Stefano Zontone
Stefano Zontone 2020년 10월 23일
Yes, correct.
Pls, notice I am referring to Live Editor Output. I used a similar script with the standard editor and the output on the Command Window was ok. The clc command doesn's seem to work with Live Editor Output and I don't find a way to overwrite the previous output string with the updated one.

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채택된 답변

Walter Roberson
Walter Roberson 2020년 10월 23일
There is no publicly known way to do what you are asking.
In recent discussions about related issues (having to do with removing plots), Mathworks staff have said they will ask the developers to provide methods. The response was not entirely clear as to whethere there is no internal method at the moment, or if there is an internal method but there is no public interface to it.

추가 답변(2개)

K.
K. 2020년 11월 10일
While there is currently no way to programmatically clear the output in the Live Editor, the following (copied from another post of mine) might help. Some people have used the ‘\b’ (backspace) character to create textual progress indicators (e.g. https://blogs.mathworks.com/loren/2007/08/01/monitoring-progress-of-a-calculation/). I believe there are some tools for this on File Exchange, but as an example, you could do something like the following. Note that this is a crude example only meant to demonstrate the concept.
for ind=1:20
pause(.1)
printStatus(ind) % Do the fprints in a local function so that all the textual output is coming from one line in the script.
end
function printStatus (ind)
if ind == 1
% The very first time we don't need to delete the old text
fprintf('Last processed sample: %5d', ind);
else
% Each \b removes one character from the previous fprintf.
fprintf('\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\bLast processed sample: %5d', ind);
end
end
Textual Progress Indication
  댓글 수: 1
Stefano Zontone
Stefano Zontone 2020년 11월 20일
Thank you for your suggestion...it sounds good for my needs.

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Stefano Zontone
Stefano Zontone 2020년 10월 23일
Hi Walter,
thank you for your answer.
I hope Mathworks will soon improve Live Editor functionalities...I find it very interesting and useful.
BR
S

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