Displaying 5 results from an estimated 5 matches for "tempmin".
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tempin
2009 Jun 16
1
adressing dataframes
...everyone,
I experience some problems with adressing of data.frames when I retrieve
some information for geographical position (ypos, xpos) ot of a MySQL
Database and want to perform some simple statistics. The problem is
adressing the dataframes with a construct like
rawdata[c(type)] vs. rawdata$TEMPMIN
to retrieve the numerical information and not a string (I want to store the
numerical values in a database for graphical expression)
Code Snippet:
type <- "TEMPMIN"
numbers <-summary(rawdata[c(type)])
numbers2 <- summary(rawdata$TEMPMINIMUM)
Results:
numbers
TEMPM...
2009 May 25
3
Interpolating variables within (RODBC library) SQL statements for MySQL
...[2] #
get the first X-Position
So far, so good: SQL Select works and everybody is fine, but this was just
the preparation for the next step: Select all data out of the database with
e.g. ypos = 1 and xpos = 182...
rawdata <- sqlQuery(channel, "select YPOS, XPOS, YEAR, MONTH, RANGE, APFEL,
TEMPMIN, TEMPAVG, TEMPMAX, PRECIPITATION, SUNDURATION from DATA where
YPOS='ypos' AND XPOS='xpos' AND MONTH BETWEEN 1 AND 12 AND RANGE = 1;")
The problem is that I want to use variables (xpos, ypos) to be replaced by
the numbers (much more of them) so the SQL String would be:
rawdata...
2012 May 31
1
fitting allometric equation using a for a power model
...(y)~log(x))
plot(residuals(temppow), main="pow")
abline(temppow)
plot(y~x, main="pow")
tempsum<-summary(temppow)$adj.r.squared
tempint<-summary(temppow)$coefficients[1,1] #intercept of power function
tempslope<-summary(temppow)$coefficients[2,1] #slope of power function
tempmin<-min(x)
tempmax<-max(x)
lngth<-c(tempmin:tempmax) # vector from the minimum to the maximum values
of independent variable
prediction<-exp(tempint)*((lngth)^tempslope)*exp((summary(temppow)$sigma^2)/2)
# exp((summary(temppow)$sigma^2)/2) is the bias correction
#prediction<-exp(tempi...
2011 May 16
1
Linear Discriminant Analysis error: "Variables appear constant"
...grads+
QHEIgradv+QHEImwh+QHEIcovtype+QHEIwwh+QHab+QHabBuff+QHabEros+QhabPool+
QHabWDRatio+QHabRif+QHabFines+QHabCov+QHabRating+QHabSize+TP+TKN+NH3+NH3Min
+NO3NO2N+BOD+TSS+TSSMax+TDS+SSC+SSCMax+Chloride+Sulfate+Ecoli+ChlA+DOper+
DOperMin+DOperMin1_5+DOmgL+DOmgLMean+DOmgLMax+Cond+pH+pHMax+Trans+Temp+
TempMin+Temp4+Crop100+Crop500+CropSub+Dev100+Dev500+DevSub+For100+For500+
ForSub+Pas100+Pas500+PasSub+Wat100+Wat500+WatSub+Wet100+Wet500+WetSub+
Undev100+Undev500+UndevTotal+Undev100NoPas+Undev500NoPas+UndevTotNoPas,
data=AllData1, na.action="na.omit", CV=TRUE)
Error in lda.default(x, grouping,...
2000 Nov 08
0
vq diffs
...p->pigeonmap=(long*)_ogg_malloc(p->mapentries*sizeof(long));
p->quantvals=(quantvals+factor-1)/factor;
@@ -275,9 +275,9 @@
for(i=0;i<dim;i++)subpigeons*=p->mapentries;
for(i=0;i<dim;i++)pigeons*=p->quantvals;
- temptrack=_ogg_calloc(dim,sizeof(long));
- tempmin=_ogg_calloc(dim,sizeof(float));
- tempmax=_ogg_calloc(dim,sizeof(float));
- tempstack=_ogg_calloc(pigeons,sizeof(long *));
- tempcount=_ogg_calloc(pigeons,sizeof(long));
+ temptrack=(long*)_ogg_calloc(dim,sizeof(long));
+ tempmin=(float*)_ogg_calloc(dim,sizeof(float));
+ tempmax=(...