write csv file issue

[dipenpatel235]

Below code is not working due to write df in csv file.
stuck in write csv file.
so what need to do for that ?
Saperate R code is working but not working with your library.

`<?php
require 'vendor/autoload.php';

use Okvpn\R\Process\RProcess;
use Okvpn\R\UnixPipes;

$rPath = '/usr/bin/R'; //path to R
//$rPath = 'C:\Program Files\R\R-3.5.1\bin\R.exe';
$process = new RProcess(new UnixPipes(), $rPath);

$process->start();
$rOutput = $process->write(<<<TXT
setwd("/root")
library(ggplot2)
library(RJSONIO)
library(rPython)
library(ggsunburst)
df <- read.table(header = T, sep = ",", text = "
parent,node,size
/,home,
home,Images,40
home,Videos,20
home,Documents,5
/,usr,
usr,src,
src,linux-headers,4
src,virtualbox,1
usr,lib,4
usr,share,2
usr,bin,1
usr,local,1
usr,include,1
")
write.table(df, '/root/df.csv', sep = ",", row.names = F)
sb <- sunburst_data('/root/df.csv', sep = ",", type = "node_parent")
png('test1.png')
sunburst(sb, node_labels = T, rects.fill.aes = "name")
dev.off()
TXT
);
?>
`

Thanks