// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
var jsonData = $.ajax({
url: "teste.cshtml",
dataType:"json",
async: false
}).responseText;
function jsonToTable(json, order) {
var headers = [];
var data = [headers];
for (var i = 0; i < json.length; i++) {
var row = [];
for (var j = 0; j < order.length; j++) {
if (headers.length <= j) {
headers.push(order[j]);
}
row.push(json[i][order[j]]);
}
data.push(row);
}
return google.visualization.arrayToDataTable(data);
}
var data = jsonToTable(jsonData, ['ESTADO', 'CNT']);
// Instantiate and draw our chart, passing in some options.
var chart = new
google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, {width: 800, height: 600});
}
I've put like you said and it gives me the following error:
Data column(s) for axis #0 cannot be of type string×
Terça-feira, 19 de Agosto de 2014 13:38:46 UTC+1, Tiago Correia escreveu:
>
> I'm using webmatrix to create a chart from my db. I have one cshtml file
>
> var db = Database.Open("MyDB");
> var data = @"SELECT ESTADO, COUNT(*) CNT FROM graficos WHERE ESTADO IS
> NOT NULL GROUP BY ESTADO";
> var resultadoSql = db.Query(data);
> Json.Write(resultadoSql, Response.Output);
> Response.ContentType = "application/json";
>
> That is producing this result
>
> [{"ESTADO":"ABERTO","CNT":63},{"ESTADO":"ASSOCIADO A AVARIA
> PAI","CNT":9},{"ESTADO":"AVARIA PAI COM EM
> EXECUÇÃO","CNT":3},{"ESTADO":"AVARIA PAI EM
> DESPISTE","CNT":3},{"ESTADO":"CANCELADO","CNT":3},{"ESTADO":"EM
> DESPISTE","CNT":18},{"ESTADO":"EM
> EXECUÇÃO","CNT":27},{"ESTADO":"FECHADO","CNT":189},{"ESTADO":"RESOLVIDO","CNT":51}]
>
> And on the page that the chart will be displayed (yeap google charts :x)
>
> // Load the Visualization API and the piechart package.
> google.load('visualization', '1', {'packages':['corechart']});
>
> // Set a callback to run when the Google Visualization API is loaded.
> google.setOnLoadCallback(drawChart);
>
> function drawChart() {
> var jsonData = $.ajax({
> url: "teste.cshtml",
> dataType:"json",
> async: false
> }).responseText;
>
> // Create our data table out of JSON data loaded from server.
> var data = new google.visualization.DataTable(jsonData);
>
> // Instantiate and draw our chart, passing in some options.
> var chart = new
> google.visualization.LineChart(document.getElementById('chart_div'));
> chart.draw(data, {width: 800, height: 600});
> }
>
> But i can't produce the chart it always says
>
> Table has no columns.×
>
> Then i've tried this that was on one example and it works, the chart is
> created with the values.
>
> {"cols":[
> {"type":"string"},{"type":"number"}
> ],"rows":[
> {"c": [{ "v": "ABERTO"},{"v":63} ]},
> {"c": [{ "v": "ASSOCIADO A AVARIA PAI"},{"v":9} ]},
> {"c": [{ "v": "AVARIA PAI COM EM"},{"v":3} ]},
> {"c": [{ "v": "Resolvido"},{"v":55} ]}
> ]}
>
> And i was thinking that perhaps the json file must be outputed this way ?
> How can i achieve that ?
>
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