Displaying 20 results from an estimated 7000 matches similar to: "contour plots"
2009 Nov 19
2
plot filled.contour over continent map
Dear all,
As a newbie in R I would like to do the following (simple?) thing:
to plot a filled.contour plot over a map showing country boundaries (e.g. for Europe)
What i do is:
map('worldHires',xlim=c(-10,40),ylim=c(35,70),boundary = TRUE,border=0.1)
map.axes()
filled.contour(mslp, zlim=c(1000,1020),color.palette = colorRampPalette(c("blue", "white",
2003 Jul 27
1
contourplot:how to get it to label all contours like 'contour'
Hi,
one of the nice things about contour is that it labels all contour lines.
contourplot only labels each particular elevation a single time.
i.e., if there are two contour lines corresponding to z = 45, it will only
label one of them.
is there a way to get contourplot to automatically label all the contour lines,
even those that are repeated?
i ask because i want to plot contour plots *w/
2010 Jun 22
1
contour plots
Hi All,
I'm having difficulty making a contour plot a would like some help.
A standard contourplot can be made by having an x,y, and some matrix (shape
x*y) with contents:
x = 1:10
y = 1:10
cont <- matrix(runif(100,min=1,max=2),nrow=10,ncol=10)
filled.contour(x,y,cont)
Looks very nice.
Sometimes data comes in a different format however. Basically an x and an y,
and a vector z with all
2009 Mar 15
1
Contour plots of four two-dimensional matrices
I have four large two-dimensional matrices of which I want to create contour
plots. Something like
filled.contour(<matrix>)
contourplot(<matrix>)
works but only gives me one plot at a time. If I combine the four matrices
into one three-dimensional matrix, which I'll name "seven", there should be
a way of doing something like this
contourplot(seven[,,k] for k in 1 to 4)
2013 Feb 14
1
Clip a contour with shapefile while using contourplot
Hi, I have done the interpolation for my data and I was able to create the
contours in multipanel with the help of Pascal. Now, I want to clip the
contour with the shapefile. I want only the portion of contour to be
displayed which falls inside the boundary of the shapefile.
The data mydata.csv can be found on
https://www.dropbox.com/s/khi7nv0160hi68p/mydata.csv
The data for shapefile can be
2007 Dec 13
2
Overlaying trellis xyplot on contourplot
Friends: I wish to overlay data points on a contour graph. The following
example produces a nice contour plot, but I have not mastered the concept
of using panel functions to modify plots. Can someone show me how to
overlay the data points (given after contour plot statement) on the
contourplot?
--Seth
model <- function(a,b,c,X1,X2) # provide model
function for contour
2005 Feb 08
2
Fw: Contour plot
I understand that I need to have a (in this case) square matrix with all the
data. But the question now is;
- can the contourplot not interpolate the missing values
or alternatively
- I have fit a model to the z data (z = 100 + 0.5x + 0.5y). How can I make
from this model a "square" matrix z to make a contour plot?
Kind regards, Darius Blaszijk
----- Original Message -----
From:
2003 Jan 15
2
Contour Plots
r-help,
I can't seem to get the below data organized in such a manner so as to
generate a contour plot
using any of the functions {lattice.contourplot, base.contour,
base.filled.contour}. I was wondering
if anyone could please tell me what I need to do to accomplish this.
X,Y,Level
-31.105,86.911,3843
-3.385,86.911,3896
24.335,86.911,3874
-24.175,79.700,3900
-3.385,79.700,3927
2005 Feb 09
2
[Fwd: Re: Fw: Contour plot]
Petr,
It works perfectly! But I still have a question;
I have fit the following data;
x,y,z
1,10,11
2,11,15
3,12,21
4,13,29
5,14,39
6,15,51
7,16,65
8,17,81
9,18,99
10,19,119
>dat.lm <- lm(z~I(x^2)+y, data=dat)
>dat.lm
Call:
lm(formula = z ~ I(x^2) + y, data = dat)
Coefficients:
(Intercept) I(x^2) y
1.841e-14 1.000e+00 1.000e+00
How do I create the
2009 May 13
1
overlap contour
Friends,
I have two covariance matrices (m1 and m2) of same size (150x150). I used
contourplot function to make contour plots individually (c1 and c2). I am
interested in making one contourplot overlapping the two individual contours
so that the portion of the plot above and below the diagonal can represent
the c1 and c2. Someone suggest me how can i do the same.
Is there any way that i can
2010 Oct 25
1
Artifacts in filled.contour+pdf
Dear all,
I'm using R 2.12.0 on Windows 7 (32bits)
I created a filled contour from the attached data using the following code:
load('bug.RData')
pdf('bug.pdf', width=14, height=7)
filled.contour(o4$x, o4$y, o4$z, color=rainbow, xlim=c(4,18),
ylim=c(0,35), zlim=c(14,36))
dev.off()
If you look (I used acrobat reader 9.4) at the attached bug.pdf, you see
an incomplete grid of
2009 Apr 08
1
vectors on top of contours, and lattice
OK, I needed to plot a set of vectors on top of a contour plot. I
figured out a way to do this. I create a panel function that calls
"larrows()" with arguments constructed from my vector data. Then, when
I go to do the contour plot, I call contourplot() with the "panel"
argument set to point to my newly created panel function.
So far, so good.
Now, I need to do a
2005 Feb 08
3
Contour plot
Hello,
I would like to make a contourplot of the following data;
> x <- 1:10
> y <- 1:10
> z <- 100:110
By doing >contour(x,y,z) I get the following error;
"Error in contour.default(x, y, z) : no proper `z' matrix specified"
How do I fix this??
Kind regards, Datius Blaszijk
[[alternative HTML version deleted]]
2004 Jun 07
1
contour lines on levelplot?
With "image" and "contour", one can get both colors and lines to
enhance the image of a contour plot. What's the best way to do this
with Lattice graphics? The following is one ugly hack, producing the
desired result after much trial and error (R 1.9.1 alpha under Windows
2000):
# setup
DF <- expand.grid(x=1:3, y=1:3)
DF$z <- (DF$x+DF$y)
# Traditional
2009 Jan 06
3
smoothed contour lines
Hi all,
I'm trying to draw a contour plot
with rounded (smoothed) contour lines instead of sharp angles;
when the grid consists of only a few points
in x- and y- axis, the resulting contour
is in facts rather ugly since very sharp angles may appear.
I did not find any way to do it,
by using either "contour" or "contourplot" (from the lattice package),
I wonder if there
2009 Oct 28
2
read.table but more tables at once
Dear all,
I have a lot of data files (.txt) that I want to read in all at once, if
possible.
the files have names in time system. for example: RA940101, RA940102,
RA940103, RA940104 an so on.
(meaning: RA, year:91, month: here january, day of the month.)
I tried something like
vektor <- c("RA940101","RA940102","RA940103")
for (x in 1:3)
{ data <-
2006 Feb 10
1
the proper way to use panel functions in lattice package?
Hi,
I was trying to stack a topographic map readed in from esri shapefile with a
contour map and a vector map. However, the plotMap(maptools) and
contourplot(lattice) do not seem to work well on top of each other. Here is
part of my code.
xrange<-range(225000:350000)
yrange<-range(2685000:2810000)
basemap <- read.shape("Twn25_town_dxf_Polygon.shp")
2008 Dec 03
1
how do I eliminate excess levels in lattice contourplot key / legend?
I'm working on a contourplot( ) graph, the subject of several previous
posts to this list. The contours express probabilities from 0 - 1, but the
key that is automatically generated by contourplot pads the probability
scale with values that are impossible (i.e, range goes from -0.2 to 1.2),
which will be confusing to those who view the plot. How can I get the
scale to just run from 0 - 1?
2010 Jul 10
1
contourplot by year
Hi - I have a dataframe with 4 variables - long, lat, temp and year. I would
like to plot temperature by lat and long in contour plots by year. There
are 391 data points. When I try
contourplot(temp~long*lat|year,data=hake,cuts=10,labels = TRUE,contour =
TRUE,pretty = TRUE,region=TRUE)
I get plots with dots around by data, but not contour lines or filled in
regions.
I have also used the
2010 Sep 27
1
smooth contour lines
Is there an easy way to control smoothness of the contour lines?
In the plot I am working on due to the undersampling the contour
lines I am getting are jugged, but it is clear "by eye" these should
be basically straight lines.
In maps package I found smooth.map function, but maybe there is a more
generic way
of accomplishing the same thing.
Ideally there would be an option to control