Unable to find or open table data

I have a table that was imported into the work space, and I am unsure on why it is unable to be located. The table in the workspace is named "LabData3". Two of the colunms in this table are named "Qgpm" and "hpft".

Tab = readtable('LabData3');
scatter(Tab,'Qgpm','hpft');



Error using readtable (line 498)
Unable to find or open 'LabData3'. Check the path and filename or file permissions.

Error in Lab3 (line 1)
Tab = readtable('LabData3');

[Walter Roberson]

Are you saying that LabData3 is already in the workspace? If so you would not use readtable() on it.

[Luke Butcher]

It is, what function would I use instead?

[Star Strider]

Just index into it. See Access Data in Tables for details.

Answer 1

[Walter Roberson]

Replace your line

Tab = readtable('LabData3');

with

Tab = LabData3;

[Luke Butcher]

Thank you!

Answer 2

[Peter Perkins]

Only in (I think) the most recent version of MATLAB will

scatter(Tab,'Qgpm','hpft');

work. https://www.mathworks.com/help/matlab/ref/scatter.html

In earlier versions, use scatter(Tab.Qgpm,Tab.hpft);

[Luke Butcher]

Thanks!