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getting the name of a dataframe from loading a .rda file in R

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问题 I am trying to load an .rda file in r which was a saved dataframe. I do not remember the name of it though. I have tried a<-load("al.rda") which then does not let me do anything with a. I get the error Error:object 'a' not found I have also tried to use the = sign. How do I load this .rda file so I can use it? I restared R with load("al.rda) and I know get the following error Error: C stack usage is too close to the limit 回答1: Use 'attach' and then 'ls' with a name argument. Something like:

getting the name of a dataframe from loading a .rda file in R

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How do you handle R Data internal to a package?

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问题 The R package I am developing requires several R data objects, such as pre-computed models and parameters. Currently I have each object in the 'data' directory of the package in individual .RData files. When using the package users can use the "data" function to attach these objects to their environment. The behaviour I would like instead would be that on loading the package the data objects are automatically attached to the internal package environment and not accessible to the user directly

R CMD check and .RDa Data files

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问题 I have data files in the .RDa format under the data sub directory. But, the R CMD check command is not recognizing the load("test.RDa") command and its failing at this stage and gives the following error: Warning in readChar(con, 5L, useBytes = TRUE) : cannot open compressed file 'test.RDa', probable reason 'No such file or directory' Error in readChar(con, 5L, useBytes = TRUE) : cannot open the connection Calls: load -> readChar Execution halted Can you please let me know the reason? Should

vegan dbrda species scores are empty despite community matrix provided

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问题 I have performed "Distance based redundancy analysis" (dbRDA) in R using the vegan community ecology package. I would like to show the relative contribution of (fish) trophic groups to the dissimilarity between samples (abundance data of trophic level fish assemblages) in an ordination plot of the dbRDA results. I.e. Overlay arrows and trophic level group names onto the ordination plot, where the length of the arrow line indicates the relative contribution to dissimilarity. This should be

getting the name of a dataframe from loading a .rda file in R

阅读更多关于 getting the name of a dataframe from loading a .rda file in R

I am trying to load an .rda file in r which was a saved dataframe. I do not remember the name of it though. I have tried a<-load("al.rda") which then does not let me do anything with a. I get the error Error:object 'a' not found I have also tried to use the = sign. How do I load this .rda file so I can use it? I restared R with load("al.rda) and I know get the following error Error: C stack usage is too close to the limit Use 'attach' and then 'ls' with a name argument. Something like: attach("al.rda") ls("file:al.rda") The data file is now on your search path in position 2, most likely. Do:

Base64 encoding a .Rda file

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问题 All, I'm trying to figure out how to put a .Rda file into Base64 encoding for it to be shipped to and from an API. I am really struggling with how to do this. Here's what I've got, but I think it's way off target: cuse <- read.table("http://data.princeton.edu/wws509/datasets/cuse.dat", header=TRUE) lrfit <- glm( cbind(using, notUsing) ~ age + education + wantsMore , family = binomial, data=cuse) filename <- "C:/test.Rda" save(lrfit, file=filename) library("base64enc") tst <- base64encode

How do you handle R Data internal to a package?

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The R package I am developing requires several R data objects, such as pre-computed models and parameters. Currently I have each object in the 'data' directory of the package in individual .RData files. When using the package users can use the "data" function to attach these objects to their environment. The behaviour I would like instead would be that on loading the package the data objects are automatically attached to the internal package environment and not accessible to the user directly. My understanding is that placing a 'sysdata.rda' file in the 'R' directory of the package containing

Sync nightmare - is it possible to use Merge Replication (or RDA) between 2 SQL CE instances without IIS?

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We are faced with the following problem that involves keeping the following in sync: 1 Centralised Server (IIS / MSSQL 2005) Many Desktop WPF clients distributed by ClickOnce Many Mobile clients - (Windows CE) alt text http://img502.imageshack.us/img502/8246/deployment.png With these thorny constraints: all sync relationships are bi-directional the desktop & mobile nodes require offline mode the mobile nodes cannot sync with the central server but are to sync with the desktop nodes over USB. The desktop nodes act as a server for the mobile clients, not the central server. Updates from the

Sync nightmare - is it possible to use Merge Replication (or RDA) between 2 SQL CE instances without IIS?

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问题 We are faced with the following problem that involves keeping the following in sync: 1 Centralised Server (IIS / MSSQL 2005) Many Desktop WPF clients distributed by ClickOnce Many Mobile clients - (Windows CE) alt text http://img502.imageshack.us/img502/8246/deployment.png With these thorny constraints: all sync relationships are bi-directional the desktop & mobile nodes require offline mode the mobile nodes cannot sync with the central server but are to sync with the desktop nodes over USB.