Using Nested R Functions with Qlik Sense Extension, R, and Open CPU Integration Approach with Open CPU Defaults?

Thu, 02 Jun 2016 21:12:55 GMT

Hello, as someone with a fair amount of R experience who is brand new to Qlik, I was very excited to find some of the work that has been done to create Qlik Sense Extensions that use R's capabilities via Open CPU:

GitHub - nodtvedt/qlik-sense-r-regression-extension: Simple proof of concept Qlik Sense Extension to connect a Qlik Sens…
GitHub - aasensior/sense-r: Functional examples on integrating Qlik Sense and R

Unfortunately, I am struggling to figure out how to use some basic R commands in this setup because I will have to use the default Open CPU R packages and so cannot create custom R functions as in GitHub - aasensior/sense-r: Functional examples on integrating Qlik Sense and R.

For example, how would one return the R console output for the summary (to see significance levels and more) of a linear regression object in this setup? In R, using the packaged "cars" dataset, that might be done with "summary(lm(cars$speed~cars$dist))". However, I am not sure how to nest the "lm" function within the "summary" function, especially when the "summary" function is found in https://public.opencpu.org/ocpu/library/base/R/ and "lm" in https://public.opencpu.org/ocpu/library/stats/R/‌.

The function "lm" alone is used around line 69 in https://raw.githubusercontent.com/nodtvedt/qlik-sense-r-regression-extension/master/qlik-sense-r-regression-extension.js‌.

How would that script need to be changed to return the summary of the linear regression object instead?

These may be beginner questions, but any help would be greatly appreciated!

Re: Using Nested R Functions with Qlik Sense Extension, R, and Open CPU Integration Approach with Open CPU Defaults?

Thu, 21 Sep 2017 11:40:43 GMT

There is a function summary.lm (look at https://public.opencpu.org/ocpu/library/stats/R/). This can be called with the result of the lm function.

OpenCPU - JavaScript Client‌ explains how to combine function calls by sending the session key of the first function call (lm) to the summary.lm function.

An example:

var req1 = ocpu.call("rnorm", {n: 100}, function(session1){
    var req2 = ocpu.call("var", {x : session1}, function(session2){
        session2.getObject(function(data){
            alert("Variance equals: " + data);
        });
    });
});

topic Re: Using Nested R Functions with Qlik Sense Extension, R, and Open CPU Integration Approach with Open CPU Defaults? in Integration, Extension & APIs

Using Nested R Functions with Qlik Sense Extension, R, and Open CPU Integration Approach with Open CPU Defaults?

Re: Using Nested R Functions with Qlik Sense Extension, R, and Open CPU Integration Approach with Open CPU Defaults?