Data import and establish correlation between data

file1=fopen('IV.txt');
current=textscan(file1,'%f''%f''%f')
a=current
Trial>> whos a
Name      Size            Bytes  Class    Attributes
a         1x3               336  cell

whos a is showing only size of 1X3 whereas total data size is 18361x3 and

Trial>> a{1}
ans =

0×1 empty double column vector

How can i correctly import and separate

VDS  VGS  IDS.i[0, ::] ??

Also i have only separate file VDS VGS gm

and i want to have Index array containing following columns

VDS VGS IDs gm

for all Index so that i can define a function which can depend either on all of these or any of these

How can I do that??

Thanks and Regards

Answer 1

[dpb]

You didn't account for the header line...

current=cell2mat(textscan(file1,repmat('%f'1,3),'headerlines',1,'collectoutput',1));

will give the Nx3 double array.

However, readtable is much simpler to use and gives you the named variables (or opportunity to name them; in VDS VGS IDS.i[0, ::] for the header the last column header isn't a valid Matlab variable name so it won't be able to be used automagically; if you can fix the input files is simplest...

t=readtable('IV.txt');

should get you the data; study the examples for readtable to see how to handle the headerline issues, etc., etc., ...