You could toy around with R and KNIME exports either using the generic KNIME ports or just export from inside the R nodes into graphic files, CSV files, .RDS r files, or whole environments .rdata.
Workflow 
various methods to export data and graphics from KNIME with R
External resources
Used extensions & nodes
Created with KNIME Analytics Platform version 4.1.0
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KNIME AG, Zurich, Switzerland
Versions 3.7.2, 4.1.0
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KNIME AG, Zurich, Switzerland
Versions 3.7.1, 4.1.0
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KNIME AG, Zurich, Switzerland
Version 4.1.0
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