Displaying 20 results from an estimated 600 matches similar to: "Interpolating variables within (RODBC library) SQL statements for MySQL"
2009 Jun 16
1
adressing dataframes
Hi 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
1998 Nov 28
1
No subject
Dear Friends,
Yesterday I posed a question to the list concerning the possibility of doing
animation examples in R. Here is an example S-Plus (4.5 for Windows ) that
I wrote to illustrate my problem. If I try this in R (comment out the
graphsheet and guilocator calls) I don't see my results until after the
function has iterated through the 100 trials. I would like to plot each
iteration.
2010 Dec 02
4
2D Random walk
I've wrote some code to simulate a random walk in 2 dimensions on a lattice.
Basically I want to add something in to make it plot it point by point so
you can see what is going on.
Heres my code for the random walk in 2d
RW2D<-function(N)
{
i<-0
xdir<-0
ydir<-0
xpos<-vector()
xpos[1]<-xdir
ypos<-vector()
ypos[1]<-ydir
for (i in 1:N-1)
2008 Aug 09
1
Converting nested "for" loops to an "apply" function(s)
Hello,
I would like to know more about how to use the "apply" family and have attempted to convert nested "for" loops in example code from Contributed Documentation ("The Friendly Beginners' R Course? by Toby Marthews (ZIP, 2007-03-01)") to an "apply" function(s). The relevant code is:
distances=c(51,65,175,196,197,125,10,56) #distances of 8 houses
2009 Mar 24
1
segfault when running heatmap()
Hi, I was wondering if someone in the mailing list has any insight into this
segfault error that I consistently find when running a script containing
heatmap() in R 2.8.1 and 2.8.0 on a Linux 64-bit machine.
Some points:
1. This occurs when running heatmap().
2. Interestingly, if I source() the script or copy and paste the script in
its entirety, this error occurs. However, if I run the
2001 Nov 20
2
quiver plot help
Hello everybody
I'm trying to write a simple version of matlab's "quiver".
The idea is that I have fluid with velocity defined on a grid. I have
a matrix of x-components of velocity and a matrix of y-components and
I want to see the overall flow pattern. (I work with 2D fluid
mechanics problems).
My first-stab function is below:
quiver <- function(u,v,scale=1)
# first
2012 May 31
1
fitting allometric equation using a for a power model
Hello all,
I'm fitting an allometric equation that looks like a really clean fit in
the log-log space, but when I back transform the fit of the curve appears
to need an adjustment - the fitted curve appears to predict values a good
deal higher than those from the data. I included a bias correction per
Newman, M. (1993). Regression analysis of logâtransformed data: Statistical
bias and its
2007 Oct 31
1
textplot() in gplots causes problems (0x9)
Hello,
I am using textplot function in gplots package to put some model
output inside a PDF file, but it does not seem to work properly with
PDF.
I am doing follwing:
pdf(file="C:/...", paper="a4", width=8, height=12)
.model <- lm(.model.formula, data=database)
textplot(capture.output(summary(.model)), valign="top", halign="left")
I am getting these
2010 Nov 23
1
Slow update(insert) on Data.frame
Hi
When I try to update an number in a large data.frame by its pos It's really
slow it take almost a sec to do this and I wonder why and if where is any
faster way to update a number in a data.frame
ive tried
DF$col[POS]<-number
DF[xPOS,yPOS]<-number
Thx
//Joel
--
View this message in context: http://r.789695.n4.nabble.com/Slow-update-insert-on-Data-frame-tp3055707p3055707.html
2012 Oct 23
4
Changing radii line type in radial plots
Hello all,
Is it possible to change the radii line type in radial plots? I wasn't able
to find anything online.
Thanks,
Bern
--
View this message in context: http://r.789695.n4.nabble.com/Changing-radii-line-type-in-radial-plots-tp4647238.html
Sent from the R help mailing list archive at Nabble.com.
2002 Aug 23
1
Legends and Fonts
Hello.
Is it possible to set specify the font used by legend()? I would like to
specify a fixed-width font so that I can line up parts of vertically
stacked curve labels. For example, it would be nice if I could align the
names, ages, and weights in the following three curve labels:
Bob age=7 weight=100
Alexander age=13 weight=150
Susan age=20 weight=130
Is there perhaps a clever
2013 Feb 14
12
[PATCH v7 0/5] xen: ARM HDLCD video driver
Hi all,
these are the remaining unapplied patches of the ARM HDLCD patch series.
Changes in v7:
- rebased on b61ed421d2c85b5b106c63f2c14f8aa162b282f0;
- turn more printk and panic into early_printk and early_panic.
Changes in v6:
- rebased on 77d3a1db3196b1b5864469f8d3f41d496800c795;
- remove useless initializations to NULL in lfb_init;
- more compact checks in lfb_init.
Changes in v5:
- move
2002 Mar 14
1
gif, jpeg and png image files reader AND tcltk image
Hi all,
Roger Peng and Jason Turner's suggestion with ImageMagick seem to be the
simplest "dirty" way
to get the problem solved.
But I ran into yet another interesting but quite round-about way to solve
the problem (partially). Through tcltk package, one can read in the gif
image with
> x <- tkcmd("image", "create", "photo", file=mypic.gif)
2003 Aug 13
1
stars graphs
Hi listers,
A few days ago I posted a question about the use of the stars function
on selected lines of a frame. Thanks to two helpers, a closer look at
the scale argument allowed to partially solve the problem. Yet I still
have a problem with stars.
Allow me to explain what I intend to do (sorry for my poor English and
the long post):
I want to graph an activity index of a fish during the day
2009 Aug 18
3
how to draw pentagon?
Hi everyone,
I want you all help me to give an idea, how to draw pentagon with points?
Maybe can use function, but I'm stuck.
Yhank you.
--
Hemavathi Ramulu
[[alternative HTML version deleted]]
2009 Mar 05
3
text at the upper left corner outside of the plot region
Hi,
is there a way to place text at the upper left corner (or another
corner) of the plot?
I want to place it really at the upper left corner of the whole plot
(the file I get),
not at the upper left corner of the plot-region.
I tried text() and mtext(), and corner.label() of the plotrix package
but it didn't work out.
thanks!
2009 Mar 20
1
minor tick marks for plots (PR#13616)
Hello,
I think I found a bug:
> windows(1,width = 10, height = 10, pointsize = 5,xpos = 0, ypos = 0 )
> hdata[1:3,1] <- c(1,10,15)
> hdata[1:3,2] <- c(2,1,4)
> plot(hdata[,1],hdata[,2],xaxt="n")
> axis(1,at=c(2,10,14))
> minor.tick(nx=2, ny=1,tick.ratio=1)
the minor tick marks appear between the tick marks which would have been
drawn without the option
2009 Oct 08
1
variogram
Hello everybody,
I want to run the following R-code, but it does'nt work.
> res.vgm = variogram(ertrag ~ rep, # !!!
+ loc = ~ xpos + ypos, # !!!
+ width = start.range / 10,
+ data = d)
Error in vector("double", length) : element 2 is empty;
the part of the args list of '.Internal' being evaluated was:
2011 Oct 21
1
windows limits
Hello,
Using the rgl package, I can set the device window to any dimension (that I
have tested):
par3d(windowRect=c(1,1,700,700))
With windows I can't get the window to span from the top to the bottom of
the monitor. In the following, no matter how large the ypinch value gets it
stops, leaving about 2 inches of space at the bottom of my screen:
windows(record=TRUE, ypinch=1100, xpinch=10,
2009 Nov 04
1
cascade option for dev.new?
I frequently run scripts that generate multiple graphs. Unless you specify a specific window location, dev.new superimposes all new graphics windows exactly on top of each other. It would be nice to have a "cascade=TRUE" option in dev.new to prevent windows from being hidden. A hasty approximation to this is the following function:
# utility function to prevent overlapping plot