Displaying 20 results from an estimated 5000 matches similar to: "perception of graphical data"
2006 Dec 21
1
multinom(nnet) analogy for biglm package?
I would like to perform a multinomial logistic regression on a large
data set, but do not know how. I've only thought of a few possibilities
and write to seek advice and guidance on them or deepening or expanding
my search.
On smaller data sets, I have successfully loaded the data and issued
commands such as:
length(levels(factor(data$response)))
[1] 6 # implies polychotomy
library(nnet)
2008 Mar 13
1
(no subject)
Hi there,
Am try to find tree diameter increment in a hierarchical data with tree
diameter measurements, date of measurements, in plots that are located in
different region. How do I do it? am very new to R.
Thanks for you help.
Maina Kariuki
Level 3, 8 Nicholson Street
East Melbourne VIC 3002
Ph: (03) 9637 9809
Email: maina.kariuki@dse.vic.gov.au
Notice:
This email and any
2005 Jul 21
2
bubble.plot() - standardize size of unit circle
Hello,
I wrote a wrapper for symbols() that produces a
bivariate bubble plot, for use when plot(x,y) hides
multiple occurrences of the same x,y combination (e.g.
if x,y are integers).
Circle area ~ counts per bin, and circle size is
controlled by 'scale'.
Question: how can I automatically make the smallest
circle the same size as a standard plot character,
rather than having to
2006 Sep 19
1
Adding percentage to Pie Charts (was (no subject))
Have you read the books by Cleveland?
His experiments show that most people do better estimating things and
comparing things on a linear scale rather than looking at angles and
areas (also see
http://biostat.mc.vanderbilt.edu/twiki/pub/Main/StatGraphCourse/graphsco
urse.pdf)
With a dot chart you can set the axis to go from 0 to the total of all
groups (see the example I sent before, it could
2007 Aug 08
3
Subject: Re: how to include bar values in a barplot?
Greg, I'm going to join issue with your here! Not that I'll go near
advocating "Excel-style" graphics (abominable, and the Patrick Burns
URL which you cite is remarkable in its restraint). Also, I'm aware
that this is potential flame-war territory -- again, I want to avoid
that too.
However, this is the second time you have intervened on this theme
(previously Mon 6
2009 Jan 11
6
Why does ActiveRecord allow perception of success when updating an ID, however it doesn't really work(i.e. no change in database)?
Hi,
Why does ActiveRecord allow perception of success when updating an ID,
however it doesn''t really work(i.e. no change in database)?
Here''s an example. The update of "id" versus update of a non-existent
attribute.
?> ai = AccountItem.find(:first) => #<AccountItem id: 1, account_id: 1,
date: "2009-01-11", amount:
2010 Dec 18
1
Colours for 3-way probabilities
Are there any R functions for creating palettes for three-way data?
For example, election maps for three parties where pure red, blue, and
green show 100% for the Red, Blue, and Green parties respectively,
magenta shows a 50-50 Red-Blue split with 0 for the Greens, cyan a
50-50 Blue/Green split with no Red votes and so on, with grey, black
or white at a 1/3,1/3,1/3 split vote.
I've spent a
2009 Oct 23
1
making a plot in xyplot
Hello,
I am a newbie to the lattice package in R, and I'm trying to make a plot using the xyplot function. I have repeated measures data (2 conditions) for two different groups of subjects (teens and adults).
So far, I've made a basic graph using xyplot(y ~x, group=subnum, data=mydata, type="b").
Now I would like to make all the teens' lines one color and the adults'
2012 Jun 27
4
formula version of sunflowerplot() fails when axis label specified
Hello, R-help,
does anybody have already a work-around for the problem that the formula
version of sunflowerplot() throws an error when provided with a value for
xlab (or ylab) different from NULL:
> sunflowerplot( Sepal.Length ~ Sepal.Width, data = iris, xlab = "A")
Error in model.frame.default(formula = Sepal.Length ~ Sepal.Width, data = iris, :
variable lengths differ
2006 Sep 22
1
How to retrieve results of most recent command?
In R, is there an automatic variable that stores the results of the most
recent command or commands? (I am thinking of a behavior like
Mathematica's % result-history substitution syntax.)
(I am using R 2.3.1 on Linux and R 2.3.1 on Windows XP.)
This is a pretty basic question, so I tried to do an extensive version
of the recommended pre-posting homework.
>
2004 Nov 03
2
Suggested color schemes for points, not regions?
I have seen a couple of posts about color schemes like those at the
ColorBrewer site. Most recently:
http://geography.uoregon.edu/datagraphics/color_scales.htm
These color schemes can work very well for regions (bars, polygons,
images, etc.) but are not very suitable for points and/or lines.
Is anyone aware of research/suggestions for a color scheme to use for
scatter plots? I've looked at
2007 Aug 14
2
Using sunflowerplot to add points in a xyplot panel
Hi,
I use panel.points to add points to a xyplot graphic. But I like to use the
sunflowerplot to plot my points because this is very superimposed. It is
possible to use this? I try but it dont work directly. It may be need to put
this function inside a panel.???
Thanks
Ronaldo
--
Where there's a will, there's a relative.
--
> Prof. Ronaldo Reis J?nior
| .''`.
2017 Jul 16
3
label sunflower point
Hi,
I create a plot using sunflowerplot, I need to highlight one point to show
its importance. What suggestion you have to accomplish this?
Thanks,
Aden
[[alternative HTML version deleted]]
2013 Jan 22
6
plot two time series with different length and different starting point in one figure.
Hello,
I do have two different time series A and B, they are different in length and starting point. A starts in Jan, 2012 and ends in Dec, 2012 and B starts in March, 2012 and ends in Nov, 2012.
How can I plot those two series A and B in the same plot? I.E., from Jan. 2012 - Feb, 2012, it would have one data point from A and from Mar, 2012-Nov, 2012, it would have two data points from A and B,
2002 Aug 16
0
Color perception during encoding
Hello,
I'm sorry if this mail is somehow inappropriate but I
couldn't find another feedback address on the Ogg
Theora site.
What I want to tell the people who are making a GUI
(Graphical User Interface) for a Theora encoder is. If
you intend to add a color adjuster to your encoder
program, make the GUI a boring NEUTRAL GRAY!
The reason is that human color perception of one part
of
2005 Jul 02
3
interrupted Y axis
I did not find an answer to my question after a quick
search using the R
search engine so thought I'd ask away:
Does any know if there's a function exists to create
an interrupted Y axis?
What I mean by interrupted Y axis is that part of the
Y axis has been
removed or excised to permit one to see parts of the
data in more detail.
Perhaps an example will make this clear. Please go to
2013 Mar 21
4
easy way of paste
Hello,
Is there a better way to use paste such as:
a = paste(colnames(list.indep)[1],colnames(list.indep)[2],colnames(list.indep)[3],colnames(list.indep)[4],colnames(list.indep)[5],sep="+")
> a
[1] "aa+dummy1+dummy2+bb+cc"
I tried
a = paste(colnames(list.indep)[1:5],sep="+")
> a
[1] "aa" "dummy1" "dummy2"
2006 Nov 24
1
Sunflower plot error; how to deal with NA
I suspect the problem stems from the fact that there are a couple of NA
values.
> sunflowerplot(lastoto,maxear)
Error in rep.int(i.multi, number[number > 1]) :
invalid number of copies in rep.int()
So I used the subset command to get rid of the cases with NA
hell<-subset(ChinOtoMayB,is.na(lastoto)==FALSE)
Then it worked perfectly
sunflowerplot(hell$lastoto,hell$maxear)
Is
2003 Jan 03
4
number plot symbol in scatterplot?
If I make a scatterplot and several (e.g. 5) points lie on top of each other
at a given x,y location I would like the plot symbol to be the number of
superimposed points (e.g. "5"). Could someone please tell me how to do this
in R? Thanks!
Bill Simpson
2011 Dec 12
2
Colours for sunflowerplot
Dear fellow R users,
I would like to draw a "sunflowerplot" because I have data (decade by
month) that plots multiple times on the same x-y co-ordinates. Further I
would like to colour each of the points/sunflower leaves on the plot
according to the group they belong to (i.e. which type of event each
represents within that decade and month). I thought that this would be
relatively