Clarify distinctions among table types about arborwebapps

[lukejharmon]

{
"inputs": [
{
"name": "table",
"type": "table",
"format": "rows"
},
{
"name": "ind_variable",
"type": "string",
"format": "text",
"domain": {
"format": "column.names",
"input": "table"
}
},
{
"name": "dep_variable",
"type": "string",
"format": "text",
"domain": {
"format": "column.names",
"input": "table"
}
}
],
"mode": "r",
"name": "minimum",
"outputs": [
{
"name": "tableResults",
"type": "table",
"format": "r.dataframe"
}
],
"script": "# get x and y data with names\n\nx <- table[,ind_variable]\nnames(x) <- rownames(table)\ny <- table[,dep_variable]\nnames(y) <- rownames(table)\n\n# bind x and y\ntableResults <- as.data.frame(cbind(x, y))\n",
"description": ""
}

[lukejharmon]

that is a minimal example. I think the problem is restricted to using table:rows on a "csv" object on the INPUT side. I get a more meaningful error if I mess with the outputs.