2d:null 2e:["$","title",null,{"children":"Hello, R on OpenCPU! | Bryan Gin-ge Chen | Observable"}] 33:T449,{ const div = html`

`; const button = div.querySelector("button"); button.onclick = () => { //arguments const mysnippet = new ocpu.Snippet($("#functionInput").val()); //disable button $("button").attr("disabled", "disabled"); // use the public base server ocpu.seturl("//cloud.opencpu.org/ocpu/library/base/R"); //perform the request var req = ocpu.rpc( "do.call", { what: mysnippet, args: { x: [1, 2, 3, 4, 5], n: 3 } }, function (output) { $("#functionOutput").text(output); } ); //if R returns an error, put the error message req.fail(function () { const err = "Server error: " + req.responseText; $("#functionOutput").text(err); }); req.always(function () { $("button").removeAttr("disabled"); }); }; return div; }34:T43a,{ const div = html`

`; const button = div.querySelector("button"); button.onclick = () => { //arguments const mysnippet = new ocpu.Snippet($("#snippetInput").val()); //disable button $("button").attr("disabled", "disabled"); // use the public base server ocpu.seturl("//cloud.opencpu.org/ocpu/library/base/R"); //perform the request const req = ocpu.call( "identity", { x: mysnippet }, function (session) { session.getConsole(function (outtxt) { $("#snippetOutput").text(outtxt); }); } ); //if R returns an error, put the error message req.fail(function () { const err = "Server error: " + req.responseText; $("#snippetOutput").text(err); }); req.always(function () { $("button").removeAttr("disabled"); }); }; return div; }35:T730,{ // without the style file for #plotdiv, // the server will complain that the figure margins are too large! const div = html` n (count) distribution type

This is a demo of the rplot function in the opencpu.js library. It calls the R function randomplot in the R package appdemo.

`; const button = div.querySelector('button'); button.onclick = () => { //disable the button to prevent multiple clicks $("#plotSubmitbutton").attr("disabled", "disabled"); // Use the "appdemo" server ocpu.seturl("https://cloud.opencpu.org/ocpu/apps/rwebapps/appdemo/R"); //read the value for 'myname' var nfield = parseInt($("#nfield").val()); var distfield = $("#distfield").val(); //create the plot area on the plotdiv element var req = $("#plotdiv").rplot("randomplot", { n : nfield, dist : distfield }) //if R returns an error, alert the error message req.fail(function(){ $("#plotdiv").text("R returned an error: " + req.responseText); }); //after request complete, re-enable the button req.always(function(){ $("#plotSubmitbutton").removeAttr("disabled") }); }; return div; }36:T2b10,LICENSE = { return 'Apache License Version 2.0' // https://www.apache.org/licenses/LICENSE-2.0 // Apache License // Version 2.0, January 2004 // http://www.apache.org/licenses/ // TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION // 1. 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The [OpenCPU system](https://www.opencpu.org/) provides a HTTP API for data analysis using R. This notebook contains a copy of the OpenCPU JS client library (licensed under Apache 2.0) and a few demonstrations of its features (from [the OpenCPU JSFiddle](https://jsfiddle.net/user/opencpu/fiddles/)).\n\nThe client library relies on JQuery, so we start with that:`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4,"value":"$$ = require('jquery')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":48,"value":"md`The following cell \\`require\\`s the [OpenCPU client library](https://www.opencpu.org/jslib.html).`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":7,"value":"ocpu = {\n $; // this tells Observable that this require statement depends on jQuery\n const response = await fetch(\"https://cdn.opencpu.org/opencpu-0.5.js\");\n const blob = await response.blob();\n return require(URL.createObjectURL(blob)).catch(() => window.ocpu);\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":57,"value":"md`You can import all this into a notebook of your own by pasting the following into a cell:\n\n\\`\\`\\`js\nimport {$, ocpu} from '@bryangingechen/hello-r-on-opencpu'\n\\`\\`\\`\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":61,"value":"md`To use \\`R\\` with OpenCPU, we first need to give the client the URL to an OpenCPU server instance. Fortunately, OpenCPU provides [a public server with various R libraries installed](https://www.opencpu.org/api.html#api-libraries).\n\nThe examples on this page will use two different servers, so we will have each of the widgets below call \\`ocpu.seturl()\\` when the \"action button\" is clicked. For more typical usecases, you should be able to set the URL once like this somewhere before you start making server calls (e.g. in its own cell):\n\\`\\`\\`js\n // Successfully running seturl returns a list of R objects/functions available; this info is also displayed the console\n const R_objs = ocpu.seturl(\"https://cloud.opencpu.org/ocpu/library/mypackage/R\");\n\\`\\`\\`\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":93,"value":"md`Here's a copy of the JSFiddle [\"Run Arbitrary Function\"](http://jsfiddle.net/opencpu/7torLdk9/).`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":97,"value":"$33","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":79,"value":"md`And here's a copy of the JSFiddle [\"Posting Code Snippets\"](http://jsfiddle.net/opencpu/v42v3/).`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":39,"value":"$34","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":84,"value":"md`The plot widget JSFiddles appear to be broken ([1](http://jsfiddle.net/opencpu/MkAVF/), [2](http://jsfiddle.net/opencpu/R7ztn/)), but it's easily fixed by updating the URL to the OpenCPU server. For more examples of OpenCPU usage, see [the \"App Demo\"](https://cloud.opencpu.org/ocpu/apps/rwebapps/appdemo/www/).`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":89,"value":"$35","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":62,"value":"$36","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W37","stdlib":"1","titling":"auto"}} 32:"$31:body"