Maximum size of input files

[AndrewMacColl]

Dear All
I am a new user of MARK. I have some large datasets on recapture of ringed (banded!) passerines using mistnets (1000's of individuals and 100's of trapping seesion). I would like to be able to analyse patterns of survival from these datasets, but MARK crashes if the input dataset is more than about 300 individuals and about 50 trapping sessions. I cannot believe that the program cannot handle larger datasets. What am I doing wrong? I am running MARK in Windows XP on a laptop with 2Gb of RAM.
Thanks
Andrew

[Jochen]

Andrew,
if you do not want to include many individual covariates you should use the summary input format as described in the book. That works fine with thousands of individuals (but I never tried >50 trapping occasions).
Good luck!
Jochen

[kdecollibus]

What summary input format are you referring to? Do you have a page number?

-Karin

[cooch]

What summary input format are you referring to? Do you have a page number?

-Karin

Chapter 2 - data formatting chapter. On or near bottom of p. 3, as I recall.

[cooch]

Dear All
I am a new user of MARK. I have some large datasets on recapture of ringed (banded!) passerines using mistnets (1000's of individuals and 100's of trapping seesion). I would like to be able to analyse patterns of survival from these datasets, but MARK crashes if the input dataset is more than about 300 individuals and about 50 trapping sessions. I cannot believe that the program cannot handle larger datasets. What am I doing wrong? I am running MARK in Windows XP on a laptop with 2Gb of RAM.
Thanks
Andrew

Can't ay without looking at the files, and MARK can handle very large problems, but 2 Gb of RAM is not necessarily a lot for high-dimensional problem. Windows is not a great operating system for memory use - you can use at most 3.5 Gb of addressable RAM (on a machine with 4 Gb installed). With 2 Gb installed, you're actually addressing about 1.5 or so (the difference is the amount of RAM reserved for Windows system use).