How to get the indices of specified name

Hi,

I have below cell array

Mek989.0
YTG873.0
RFD645.0
RFD645.0
WER134.0
WER134.0

my specified name:RFD645.0, and I want to find the indices of rows which is not "RFD645.0" here in this case, row1,2,5,6. My desired output is:

1
2
5
6

Answer 1

[the cyclist]

C = {'Mek989.0';
    'YTG873.0';
    'RFD645.0';
    'RFD645.0';
    'WER134.0';
    'WER134.0'};

output = find(not(ismember(C,'RFD645.0')));

[Kanakaiah Jakkula]

Sir, Thanks, it works, I want bit more, I want to get the index of first not a memebr row. In this case, the index is 1 becasue the first name is not RFD645.0

[Image Analyst]

firstIndex = output(1);

[Kanakaiah Jakkula]

Sir,

This is ok, but any other way to get it in one line. My input is

C = {'Mek989.0';
    'YTG873.0';
    'RFD645.0';
    'RFD645.0';
    'WER134.0';
    'WER134.0'};

I want to get the index of first apperence of "RFD645.0"(in this case is 3) I use the below syntax, but is doesn't work for cell array

ix = find(C==RFD645.0, 1, 'first');

[the cyclist]

find(strcmp(C,'RFD645.0'),1,'first')

[Kanakaiah Jakkula]

Sorry Sir, I have one more last question, I use the below command:

indx=find(strcmpi(C,'RFD645.0',1,'first')

Lastly, I want to use it for "not condition" the condition which is different from "RFD645.0"

Thanks a lot Sir, and very very sorry to ask continuous questions

[the cyclist]

You mean you want to find the first element that does not match?

indx=find(not(strcmpi(C,'RFD645.0')),1,'first')

[Kanakaiah Jakkula]

Yes, It works, perfect. Thanks a lot.