Dear list,

I want to fit the growth curves for cell cultures. I have three independent
replicates for each cell type and I have two cell types. After I want to
test if the curves are significantly different. I am trying to use grofit
but I am getting the following error:

TestRun <- grofit(data[1,], data[2,], TRUE)

= 1. growth curve =================================
----------------------------------------------------
Error in gcFitModel(acttime, actwell, gcID, control) :
  gcFitModel: length of input vectors differ!

but as you can see in the data, the vectors have the same length so I don't
understand...
this is the data:

V2 V3 V4 V5       V6       V7 V8 V9      V10      V11      V12
V13       V14      V15      V16
time        1  1  1  2  2.00000  2.00000  3  3  3.00000  4.00000  4.00000
4.00000   5.00000   5.0000   5.0000
cell_1   10 10 10 24 23.33333 35.00000 34 35 43.00000 81.00000 81.33333
83.33333 148.00000 115.3333 156.3333
cell_2 10 10 10 21 19.66667 21.33333 28 28 29.33333 65.33333 57.33333
63.33333  91.66667 116.3333 115.0000

session info

R version 2.13.0 (2011-04-13)
Platform: i386-apple-darwin9.8.0/i386 (32-bit)

locale:
[1] C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] grofit_1.0

loaded via a namespace (and not attached):
[1] tools_2.13.0


Thanks for the help.
Kind regards,

Andreia

-----------------------------------------------------------------------------------------------
Andreia J. Amaral, PhD
BioFIG - Center for Biodiversity, Functional and Integrative Genomics
Instituto de Medicina Molecular
University of Lisbon
Tel: +352 217500000 (ext. office: 28253)
email:andreiaamaral@fm.ul.pt ; andreiaamaral@fc.ul.pt

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