Displaying 20 results from an estimated 1000 matches similar to: "help on spatial data"
2013 Jan 27
3
Package: VennDiagram. Error in draw.pairwise.venn Impossible: cross section area too large
Dear list,
When I use VennDiagram package, I got a error as follow:
venn.plot <- draw.pairwise.venn(
area1 = 3186,
area2 = 325,
cross.area = 5880);
Error in draw.pairwise.venn(area1 = 3186, area2 = 325, cross.area = 588) :
Impossible: cross section area too large.
Does anyone have suggestion?
Thank you.
2011 Mar 20
2
R as a non-functional language
I'm reading Torgo (2010) *Data Mining with
R*<http://www.liaad.up.pt/~ltorgo/DataMiningWithR/code.html>in
preparation for a class I'll be teaching next quarter. Here's an
example
that is very non-functional.
> pH <- c(4.5,7,7.3,8.2,6.3)
> names(pH) <- c('area1','area2','mud','dam','middle')
> pH
area1 area2 mud dam
2009 May 14
1
Supplying NA or Zeros in dataframe for missing factor combinations
Hi there,
I am not getting anywhere near a solution, so here is my question. I
have searched the archives and didn't find a solution, but maybe my
search didn't use the right words. So here it is:
I have a dataframe with the following structure
factor1 factor2 value
In the (rather large) dataset I have to work on, there are some factor
combinations missing, e.g.
factor1 <-
2011 Jan 31
4
Select rows with distinct values in a column and other conditions
My data frame looks like:
SightingID PA1 PA2 PlotID InOverlap Area1 2001 1 -99 392 Y 0.22 2002 1 -99 388 Y 0.253 2008 1 NA 104 N 0.344 2010 1 NA 71 N 0.185 2012 1 NA 61 N 0.166 2013 1 NA 61 N 0.227 2014 1 NA 62
2003 Apr 23
0
MySQL
Dear laurent,
> But there are lots of commands I found in R docs which are "not found",
> such as getTable. Deprecated (I successfully used dbListTables) or do I
> simply miss a package ?
>From RMySQL\NEWS:
* added (almost) trivial convenience RS-DBI functions getTable(),
assignTable(), existsTable(), and removeTable(). They all mimic the
corresponding R/S get(),
2011 Apr 01
3
programming: telling a function where to look for the entered variables
Hi there,
Could someone help me with the following programming problem..?
I have written a function that works for my intended purpose, but it
is quite closely tied to a particular dataframe and the names of the
variables in this dataframe. However, I'd like to use the same
function for different dataframes and variables. My problem is that
I'm not quite sure how to tell my function in
2009 Jul 31
2
merging two data frame with colomns of different length
Dear all,
I am trying to merge two data frames based on a common column but for this
common column both data frame do not have the same length and associated
information. I checked previous exemples in the list but was not able to apply
them in my case... Is someone know how to do that? Below is my code with the
expected result:
# data frame 1
Id1 <- c(1,1,1,2,2,2,3,3,3)
Habit1 <-
2009 Aug 07
0
Problem with area()
I'm using area() to evaluate the area under
2 functions (defined using approxfun()) and the result is in contradiction
with visual inspection (please see:
http://sites.google.com/site/eospansite/dummy/problem_area.jpg
)
The area under the red curve should be larger
than the one under the black curve, but I'm
geting the opposite result using area().
This is what I'm doing:
2003 Jun 30
2
spatial correlation test
hello,
I want to do a test for spatial correlation.
I tried it with geary.test() but I don't understand the required input.
x= a numeric vector the same length as the neighbours list in listw (my
sampled data, I assume)
listw= a listw object created for example by nb2listw (well when I check
nb2listw() I get to "neighbours - an object of class nb" - but I couldn't
figure
2004 May 30
1
I20 Drivers Crash system when used with Rsync
Note: I don't know if this is a problem withe I20 drivers or Rsync so
I'm submitting to both the Kernel Bugzilla and the Rsync mailing list. I
couldn't find a bugzilla for Rsync. I hope this was the correct way to
submit this issue.
Distribution: Debian
Hardware Environment: Intel 850MV Mother board, Pentium 4 processor,
1Gig of RAM, Adaptec 2400A RAID Controler. Both the
2012 May 11
1
Overlapping area script
Dear All
I would really appreciate some help with a script which a colleague wrote
for me (attached), but I am having problems running (and have not been able
to contact my colleague).
The script is designed to compare the area of suitable habitat in binary
projections of a large number of species current and future distributions,
and create an excel file detailing the total area suitable in the
2003 Feb 05
1
INTERNAL ERROR on smbd_audit
Hello
my name is Piercarlo and I've discovered a bug in smbd_audit when I
trace a Samba 2.2.7 or 2.2.7a on red hat 7.3 -the error exist on the
redhat 2.4.18-17kernel ,on the original rh73 2.4.18-3 kernel and on the
standard linus kernel (I tried on 2.4.20)-->these kernels are all the
kernels that I tried.
This error appear when samba is configured as pdc with the roaming of
the users
2012 Jan 29
1
Help joincount.test
Hello,
I'm trying to analyse the spatial organization of different fields planted
with different varieties (each field has only one variety), but I have
problems trying to understand the results of the test I did.
To do this, I created different neighbourhood matrix. For example, for the
first matrix, fields are considered as neighbours if they are distant from 0
to 1000 meters from each
2001 Feb 12
2
supsmu vs. ppr
I used the supersmoother function in the modreg package as follows:
super <- supsmu(ilogemp,award)
Then I decided that I might want additional explanatory variables (other
than ilogemp) in my model. The ppr function in modreg seemed a logical
extension of supsmu from univariate to multidimensional explanatory
variables. As a "check" I ran the following:
pprest <-
2013 Apr 16
1
Spatial Ananlysis: zero.policy=TRUE doesn't work for no neighbour regions??
Hello,
I'm new to R and to Spatial Analysis and got a problem trying to create a
Spatial Weights Matrix.
*I us the following code to create the Neighbourslist:*
>library(maptools)
>library(spdep)
>library(rgdal)
>location_County<- readShapePoly("....")
>proj4string(location_County)<- CRS("+proj=longlat ellps=WGS84")
>location_nbq<-
2011 Jan 19
3
question about result of loglinear analysis
Hi all:
Here's a question about result of loglinear analysis.
There're 2 factors:area and nation.The raw data is in the attachment.
I fit the saturated model of loglinear with the command:
glm_sat<-glm(fre~area*nation, family=poisson, data=data_Analysis)
After that,I extract the coefficients:
result_sat<-summary(glm_sat)
result_coe<-result_sat$coefficients
I find that all the
2005 Nov 17
1
Morans I for Spatial Surveillance
Hello,
I am interested in using Morans I for different time intervals to detect disease clusters.
Ultimately I would like to use CUSUM - or similar monitoring statistic to monitor the results of Morans I - similar to the work by
Rogerson (2005) Spatial Surveillance and Cummulative Sum Methods in Spatial and Syndromic Surveillance for Public Health.
Thus far - thanks to the list I have
2011 May 04
1
Instrumental variable quantile estimation of spatial autoregressive models
Dear all,
I would like to implement a spatial quantile regression using instrumental variable estimation (according to Su and Yang (2007), Instrumental variable quantile estimation of spatial autoregressive models, SMU economics & statistis working paper series, 2007, 05-2007, p.35 ).
I am applying the hedonic pricing method on land transactions in Luxembourg. My original data set contains
2010 Nov 23
2
Help with grouped barplot
Given the data structure below, how can I create a bar plot for the values of disc for each area grouped by year?
bar <-structure(list(year = c(2003, 2003, 2003, 2003, 2003, 2003, 2003,
2007, 2007, 2007, 2007, 2007, 2007, 2007), area = structure(c(6L,
4L, 1L, 2L, 3L, 5L, 7L, 6L, 4L, 1L, 2L, 3L, 5L, 7L), .Label = c("AK",
"ID", "MT", "NW",
2015 Jul 27
4
Como modificar valores en un data frame
Estimad en s, querĂa realizar una consulta
Dado un data frame llamado aves, como puedo sustiuir las variables area,
dist y distm por sus logaritmos en base10 y volver a crear un data frame?
Muchas gracias
Saludos
Susana
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