search for: paloalto

Hi, In perl, to get a substring matching a particular pattern can be implemented like the following example: $x = "AAAA.txt"; if ($x=~ /(.*?)\.txt/){ $prefix = $1; } So how to do the same thing in R? Can someone provide me the code sample? Thanks much in advance. -- Waverley @ Palo Alto

Hi, Can someone help as how to use R to program google search in the R code? I know that other languages can allow or have the google search API If someone can give me some links or sample code I would greatly appreciate. Thanks. -- Waverley @ Palo Alto

I use ROCR to plot multiple runs' performance. Using the sample code as example: # plot ROC curves for several cross-validation runs (dotted # in grey), overlaid by the vertical average curve and boxplots # showing the vertical spread around the average. data(ROCR.xval) pred <- prediction(ROCR.xval$predictions, ROCR.xval$labels) perf <- performance(pred,"tpr","fpr")

I want to run s7raw on Kubuntu fiesty http://www.geocities.co.jp/SiliconValley-PaloAlto/9919/s7raw.html It is a small single .exe program that can be run in windows without installing. I first installed the version of wine in the ubuntu repos and have since upgraded to the most recent version available in the winehq repos but get the same problem with both versions. I have man...

...see is: [Jun 17 10:09:40] NOTICE[3311]: chan_sip.c:7783 sip_reg_timeout: -- Registration for 'portland at 10.XX.X.25' timed out, trying again (Attempt #2273) And similarly on the other side: [Jun 17 10:09:16] NOTICE[17102]: chan_sip.c:10169 sip_reg_timeout: -- Registration for 'paloalto at 10.XX.X.10' timed out, trying again (Attempt #1660) Restarting Asterisk and even both servers doesn't seem to change anything. The last time this happened, for some reason setting srvlookup=yes in the [general] section of sip.conf *seemed* to fixed it. The previous time this occured, th...

Hi, when I assign a one row matrix to another variable, then somehow R automatically convert that varaible into a list. For example: > a = matrix (12, 3, 4) > b = a[1,] > b [1] 12 12 12 12 Is there a way to enable R automatically make b as a one row matrix , rather than explicitly assign like matrix (b, ncol=1). I have come across a couple of time, that when I try to check how many

Hi, I understand for 1 d classifiers, you can use ROCR package. Is there a package you can plot ROC curve for 2d classifiers? One of my colleagues asked me about this. I have been quite puzzled, conceptually, how you can do the ROC curve for 2d classifiers. Can someone share his/her knowledge or experience? Thanks in advance. -- Waverley @ Palo Alto

Hi, I want to extract some of the substring via pattern recognition. But I don't know how to do it in R. In perl: my $url = "/pages-cell.net/deepan/sony/"; if($url =~ m/\/(.*)\//g) { my @result = $1; return @result; } How does the same work in R? Thanks much in advance -- Waverley @ Palo Alto

Hi, I have a matrix a = matrix (1:16, 4, 4) b = c (2,3) I want to find out which rows of a, where a[,1] equals any values of b? I know that if b is only one value, e.g, b=2, then what I want is a[a[,1] == 2,] But what about if it is not one value but a vector of values? Thanks much in advance. -- Waverley @ Palo Alto

Dear colleague, I have two data frame which I tried to use dbWriteTable function with append=TRUE to write to the mysql database. The problem is that if I am run my R script directly then it is fine. Both data frame got written into the database. But when I tried to embed the script to be called as system("R --save < whatever.R") in my perl script, I saw very strange things. One

Hi, I have a question of aov. e.g. aov.ex = aov(x~y) summary(aov.ex) The aov summary will print to the screen. How can I extract the aov result, in particular the values of Pr(>F) and F value into a vector so that I can use them for other use? Thanks. -- Waverley @ Palo Alto

Hi, I have a question about ROCR package. I got the ROC curve plotted without any problem following the manual. However, I don't know to extract the values, e.g. y.values ( I think it is the area under the curve auc measure). The return is an object of class "performance" which have Slots and one of the slot is "y.values". I type the object and I can see them in

Hi, I am using the function heatmap(stats) to draw a microarray heatmap, columns are samples and rows are gene features. I did a 2D clustering during the heatmap drawing. The features and samples indeed cluster into several blocks both vertically and horizontally. I can get the index of re-ordered rows and columns after the heatmap drawing by typing the the return variable of the heatmap

Dear Colleagues, I am looking for a package or previous implemented R to subgroup and exaustively divide a vector of squence into 2 groups. For example: 1, 2, 3, 4 I want to have a group of 1, (2,3,4) (1,2), (3,4) (1,3), (2,4) (1,4), (2,3) (1,2,3), 4 (2,3), (1,4) ... Can someone help me as how to implement this? I get some imaginary problem when the sequence becomes large. Thanks much in

Hi, I have one matrix derived from my function. It is as following: Browse[1]> each.uaa.data [,1] [,2] [1,] 33 152.3530 [2,] 33 264.7059 [3,] 51 583.3333 [4,] 33 323.3333 [5,] 50 292.549 [6,] 33 300 [7,] 56 104.1176 [8,] 52 246.6667 [9,] 53 242.5490 [10,] 33 212.9412 when I tried to get each.uaa.data[,2], it gave me a list, when I expect a vector so that

Hi, I have a question reading using RMySQL trying to load one R vector into a table column. To be more specifically, the table is there populated. Now I add a new column and want to populate this. Can some colleagues on this list teach me how to do this? I know how to write one R object/table into MYSQL table using dbWriteTable. But in this situation, I just want to do one column. Thanks

Hi, I have tried some time trying to figure out how to use pamr to plot multiclass Estimated probabilities for the training data and test data? Specifically, how to recreate the PAMR publication on PNAS with Tibshrani et al. The publication is as attached. The plot I want to do is Figure 5. I have downloaded the pamr package and the function which gives similar plot is pamr.plotcvprob

Please help. I found the code in the archive. The author of this script says: "The first function (seROC) calculate the standard error of ROC curve, the second function (cROC) compare ROC curves." Can some one explain to me what are the na, nn and r parameters which are used as the input to the following two functions? Thanks much in advance. > From: Bernardo Rangel Tura >

Hi, I am thinking about using R to create a database, then create table in MySQL server. Can I do that using RMySQL package? I am familiar with RMySQL, and in the online help most of the sample code assumes the database exists and transact with the table inside the database. Can someone provide me some sample code to create a database and table? Specifically create a database first, then

Hi, I have a question of the method as how to normalize the data sets according to a set of the internal measurements. For example, I have performed two batches of experiments contrasting two different conditions (positive versus negative conditions): one at a time. 1. each experiment, I measure signals of variable v1 to v100. I want to understand v1 to v100 change under these two contrasting