Convert Taverna list of RExpr to R list - v2
Created: 2013-09-04 15:37:15
Last updated: 2013-10-14 15:41:25
This workflow accepts a Taverna list of arbitrary R expressions and returns a single R expression representing an R list containing the original expressions.
This workflow relies on the current Taverna behaviour of an R expression being represented by a list of strings containing the deparsed expression. If this changes, this workflow will likely break.
The first BeanShell converts each R expression (actually a list of strings) to a single string. This uses implicit iteration to do this for each R expression, so input port depth is 2 but the BeanShell input depth is 1.
The second Beanshell creates a comma-separated list of the deparsed R expressions and wraps the string with the R list() function. So now we have a single string s that can be turned into an R list using eval(parse(text=s)).
But RShell already does that parsing for us, so we just need to ensure the string looks like an R expression by turning it into a list of strings. So we actually output a 1-element list containing the string.
Version 1: initial implementation
Version 2: reduce number of BeanShells
Preview
Run
Run this Workflow in the Taverna Workbench...
Workflow Components
Authors (1)
Titles (1)
| Convert Taverna list of RExpr to R list - v2 |
Descriptions (1)
| This workflow accepts a Taverna list of arbitrary R expressions and returns a single R expression representing an R list containing the original expressions.
This workflow relies on the current Taverna behaviour of an R expression being represented by a list of strings containing the deparsed expression. If this changes, this workflow will likely break.
The first BeanShell converts each R expression (actually a list of strings) to a single string. This uses implicit iteration to do this for each R expression, so input port depth is 2 but the BeanShell input depth is 1.
The second Beanshell creates a comma-separated list of the deparsed R expressions and wraps the string with the R list() function. So now we have a single string s that can be turned into an R list using eval(parse(text=s)).
But RShell already does that parsing for us, so we just need to ensure the string looks like an R expression by turning it into a list of strings. So we actually output a 1-element list containing the string.
Version 1: initial implementation
Version 2: reduce number of BeanShells
|
Dependencies (0)
Inputs (1)
| Name |
Description |
| list_of_r_expressions |
|
Processors (2)
| Name |
Type |
Description |
| FlattenListOfStringsToString |
localworker |
ScriptStringBuffer sb = new StringBuffer();
for (Iterator i = stringlist.iterator(); i.hasNext();) {
String item = (String) i.next();
sb.append(item);
if (i.hasNext()) {
sb.append("\n");
}
}
concatenated = sb.toString();
|
| CombineListOfStringsIntoRList |
localworker |
ScriptStringBuffer sb = new StringBuffer("list(");
for (Iterator i = stringlist.iterator(); i.hasNext();) {
String item = (String) i.next();
sb.append(item);
if (i.hasNext()) {
sb.append(",");
}
}
sb.append(")");
concatenated = sb.toString();
List output = new ArrayList(1);
output.add(sb.toString());
|
Outputs (1)
| Name |
Description |
| r_list_of_expressions |
|
Datalinks (3)
| Source |
Sink |
| list_of_r_expressions |
FlattenListOfStringsToString:stringlist |
| FlattenListOfStringsToString:concatenated |
CombineListOfStringsIntoRList:stringlist |
| CombineListOfStringsIntoRList:output |
r_list_of_expressions |
Uploader
License
All versions of this Workflow are
licensed under:
Version 2 (latest)
(of 2)
Credits (2)
(People/Groups)
Attributions (0)
(Workflows/Files)
None
Shared with Groups (0)
None
Featured In Packs (0)
None
Log in to add to one of your Packs
Attributed By (0)
(Workflows/Files)
None
Favourited By (0)
No one
Statistics
Other workflows that use similar services
(0)
There are no workflows in myExperiment that use similar services to this Workflow.
Download Workflow
]
Reviews
(0)
No comments yet
Log in to make a comment