Delete rows from array

I have a large csv file which looks like this:

"Ion N","Mass","Charge","X","Y","Z","Azm","Elv","KE"
3849094,0.00054858,-1,66.5216,-51,-3.8,-180,88.7,18160
3849095,0.00054858,-1,27.3925,30.3532,-4.07076,-177.1,41.5494,17697.2
3849096,0.00054858,-1,66.5216,-51,-3.7,-180,88.7,18160
3849097,0.00054858,-1,26.6277,31.0039,-3.91402,-177.096,40.8293,17699.4
3849098,0.00054858,-1,66.5216,-51,-3.6,-180,88.7,18160
3849099,0.00054858,-1,4.125,44.9887,-2.47517,-176.363,25.715,17711.1

To create and array with each second row I use the following command:

data(2:2:end,:) = []

My output file then looks like this:

 "Ion N","Mass","Charge","X","Y","Z","Azm","Elv","KE"
 3849095,0.00054858,-1,27.3925,30.3532,-4.07076,-177.1,41.5494,17697.2
 3849097,0.00054858,-1,26.6277,31.0039,-3.91402,-177.096,40.8293,17699.4
 3849099,0.00054858,-1,4.125,44.9887,-2.47517,-176.363,25.715,17711.1

However, I wish to keep the first row and delete the second one and keep the third row and so on but the following command doesn't seem to work.

data(1:1:end, :) = []

My desired output file should look like this:

"Ion N","Mass","Charge","X","Y","Z","Azm","Elv","KE"
3849094,0.00054858,-1,66.5216,-51,-3.8,-180,88.7,18160
3849096,0.00054858,-1,66.5216,-51,-3.7,-180,88.7,18160
3849098,0.00054858,-1,66.5216,-51,-3.6,-180,88.7,18160

Could anyone advise on how I can implement this?

Answer 1

[Adam Danz]

I'm not following your examples but does this solve your problem?

data(1:2:end, :) = []

or

data(2:2:end, :) = []

[ariane]

yup, the first answer solves it. thanks