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plot functions not working: Error finding class matlab.gra​phics.char​t.primitiv​e.Line

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Jack Michael
Jack Michael 2024-2-6
回答： Shubham 2024-2-7
Hey all,
Everytime I try to plot something I get the following error:
Error finding class matlab.graphics.chart.primitive.Line.
For example,
>> plot(x, y)
Error using plot
Error finding class matlab.graphics.chart.primitive.Line.
Thank you!
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Steven Lord
Steven Lord 2024-2-6
Before reinstalling MATLAB, a slightly smaller hammer that might resolve the problem (if the cause is a corrupted MATLAB search path) would be to try restoredefaultpath.

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回答（1 个）

Shubham
Shubham 2024-2-7
Hi Jack,
The error message you're seeing suggests that MATLAB is having trouble locating the class definition for the Line object, which is a fundamental part of MATLAB's plotting system. This could be due to several reasons, such as a corrupted MATLAB installation, issues with the MATLAB path, or problems with Java on your system.
Here are some steps you can try to resolve this issue:
  1. Ensure that the MATLAB path has not been altered to exclude important directories. You can reset the path to the default by using the command:
restoredefaultpath;
rehash toolboxcache;
matlab.graphics.chart.primitive.Line;
2. Sometimes, clearing the Java cache can resolve issues related to MATLAB's Java-based components:
clear java;
3. Try reinstalling the MATLAB as there might be a deeper issue with the MATLAB installation.

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