Displaying 8 results from an estimated 8 matches for "gonad".
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gona
2011 Feb 25
1
data.frame operations
Hi All,
I've been doing circles with this all morning, although I'm sure there's
a simple solution. I have a data.frame "pop" as follows:
> pop
ind xloc yloc gonad
1 1 5 2 12
2 1 5 4 25
3 1 3 3 30
4 1 5 4 10
5 1 1 4 08
. . . . .
10 1 1 4 11
And I need the following steps:
1. Sum "gonad" by combining (xloc, yloc) as follows and create
data.frame "fish":
>...
2011 Feb 08
2
delete a row in dataframe w/o changing indexing
Hi All,
I'm trying to delete a row from my dataframe "pop" without changing the
indexing (column 0) as follows:
>pop
id birth size xloc yloc weight energy gonad consumed
1 1 36 13 34 43 0 18 0 0
2 2 36 10 39 38 0 18 0 0
3 3 36 10 37 35 0 18 0 0
4 4 36 10 31 25 0 18 0 0
5 5 36 17 34 43 0 18 0 0
By using:...
2011 Mar 18
4
subset data frame with condition
Hello,
One more question.. I have the data.frame "pop":
xloc yloc gonad ind Ene W Area
1 23 20 516.74 1 0.02 20.21 1
2 23 20 1143.20 1 0.02 20.21 1
3 23 20 250.00 1 0.02 20.21 1
4 22 15 251.98 1 0.02 18.69 2
5 22 15 598.08 1 0.02 18.69 2
6 21 19 250.00 1 0.02 20.21 3
7 22 20 251...
2011 Feb 27
2
substract 2 data.frames
Hi!
I have 2 data.frames: "fish" and "popn":
>fish
xloc yloc id birth size weight energy gonad
20 15 15 54 -60 107.9 63.0 15952.9 8.0
21 15 15 32 -60 105.1 61.4 15538.8 7.8
91 4 43 96 -60 118.9 69.4 17573.2 8.8
71 32 4 64 -60 121.6 71.0 17976.0 9.0
34 2 64 20 -60 116.2 67.9 17173.0 8.6
95 6 20 58 -60 106.5 62.2 15738.3 7.9
97...
2011 Feb 28
1
sub setting data.frame
Hi All,
I have a data.frame:
>pop
consumed ind recruits gonad cell
1 516.74 1 0.02 20.21 0.25
2 1143.20 1 0.02 20.21 0.50
3 250.00 1 0.02 20.21 0.25
4 251.98 1 0.02 18.69 0.25
5 598.08 1 0.02 18.69 0.25
6 437.38 1 0.02 18.69 0.25
7 250.00 1 0.02 17.39 0.25
8 250.00 1 0...
2018 Feb 27
1
Help
Dear
I hope you are wery well when read this e-mail.My name is Firas ALSHAWY and
I am a Phd student in the high Institute of marine research - tishreen
university- Syria
I would like to want some help my in my research, I have data ( length -
weight - gonad weight - fishing mortality - natural mortality - the number
of fish-temperature of water, maximum age ) , I would like to use the
package ( stock synthesis) in R program but I don't know how I can use it .
I would like to ask you to help my in this subject and if this package not
useful what I...
2003 Jul 14
2
problem with coding for 'optim' in R
...-1]*Expegk[i-1])
+
+ Ed[i]<- EA*(W[i]^EB)*(exp(EQ*(comp[i,3])))
+
+ GHg[i] <- Gr[i]/Ef/W[i]
+
+ if (Sex==1)
K[i]<-(((0.1681*(10^(1.3324+(0.000453*Hg[i])))/1000)/Hg[i])*GSI)/M else
+ if (Sex==2)
K[i]<-(((0.1500*(10^(0.8840+(0.000903*Hg[i])))/1000)/Hg[i])*GSI)/M
+ # = dw/ww conversion * gonad ~ body conc'n function(ng/g) / convert to ug/g
+ # then express as Q times GSI gives K / M gives daily K
+
+ EGK[i] <- (Ed[i] + GHg[i] + (K[i]*Mat))
+
+ Expegk[i] <- exp(-1*EGK[i])
+
+ bio<- cbind(W, C, ASMR, SMR, A, F, U, SDA, Gr, Ed, GHg, EGK, Hg)
+
+ }
>
> #warnings()
>...
2003 Jul 15
7
Excel can do what R can't?????
...gk[i-1])+(Hg[i-1]*Expegk[i-1])
Ed[i]<- EA*(W[i]^EB)*(exp(EQ*(comp[i,3])))
GHg[i] <- Gr[i]/Ef/W[i]
if (Sex==1)
K[i]<-(((0.1681*(10^(1.3324+(0.000453*Hg[i])))/1000)/Hg[i])*GSI)/M else
if (Sex==2) K[i]<-(((0.1500*(10^(0.8840+(0.000903*Hg[i])))/1000)/Hg[i])*GSI)/M
# = dw/ww conversion * gonad ~ body conc'n function(ng/g) / convert to ug/g
# then express as Q times GSI gives K / M gives daily K
EGK[i] <- (Ed[i] + GHg[i] + (K[i]*Mat))
Expegk[i] <- exp(-1*EGK[i])
bio<- cbind(W, C, ASMR, SMR, A, F, U, SDA, Gr, Ed, GHg, EGK, Hg)
}
#warnings()
dimnames (bio) <-list(NULL,...