On 11/07/2013 08:22, Alessandro Oggioni wrote: > Dear all, Hello
> For my work I usually used R to implemented processes. My idea is to > crate a workflow in Taverna using R scripts, to obtain plots or numeric > values. > I followed the documentation about Rshell > (http://dev.mygrid.org.uk/wiki/display/taverna/Rshell) and I installed > also Rserve on a different machine to where I run Taverna workbench. I > executed the very easy script (eg. y <– sin(x)) and this work fine. I > implemented also a workflow with different Rshell using deparse and > parse commands. > In this moment I have 2 type of problems: > 1. I have created R script with a R function. Which is the semantic type > to use in the output port in Rshell service? Could be possible to use > the R-expression? Yes, R-expression should be available as an output port's type. > 2. I have used Execute_SQL_Query Service. Which is the depth values to > obtain a result list that I can use as input in a Rshell? The Execute SQL query service returns a list of sub-lists. Each sub-list corresponds to a row of queried variables. The elements in the sub-list are the values for the variables. If you have, for example, an R script that takes a single integer input, it will not matter if you feed the results of the SQL query into it. Taverna will iterate over the elements of the lists and call the R script multiple times. > And in Rshell > service what kind of semantic type should I use to the input from a SQL > query? It depends if you want to call the Rshell service once per value or once per row. You can choose a single value, such as Integer or a vector such as Integer vector. I hope this helps. > Many thanks in advance > > Alessandro Alan ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ taverna-users mailing list [email protected] [email protected] Web site: http://www.taverna.org.uk Mailing lists: http://www.taverna.org.uk/about/contact-us/
