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April 10, 2019 22:06
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Chart.js using SQL API
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Tornadoes total versus max damage</title> | |
| <script src="http://www.chartjs.org/assets/Chart.js"></script> | |
| <meta name = "viewport" content = "initial-scale = 1, user-scalable = no"> | |
| <script src="http://libs.cartocdn.com/cartodb.js/v3/cartodb.js"></script> | |
| <style> | |
| canvas{ | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <canvas id="canvas" height="450" width="600"></canvas> | |
| <script> | |
| var sql = cartodb.SQL({ user: 'andrew' }); | |
| sql.execute("SELECT date_part('Month', t.date) as month, count(*) total, sum(damage) damage FROM tornados t GROUP BY date_part('Month', t.date) ORDER BY date_part('Month', t.date) ASC").done(function(data) { | |
| console.log(data) | |
| var total = []; | |
| var damage = []; | |
| for (i in data.rows){ | |
| total.push(data.rows[i].total) | |
| damage.push(data.rows[i].damage) | |
| } | |
| console.log(data) | |
| var lineChartData = { | |
| labels : ["January","February","March","April","May","June","July", "August", "September", "October", "November", "December"], | |
| datasets : [ | |
| { | |
| fillColor : "rgba(220,220,120,0.5)", | |
| strokeColor : "rgba(220,220,120,1)", | |
| pointColor : "rgba(220,220,120,1)", | |
| pointStrokeColor : "#fff", | |
| data : damage | |
| }, | |
| { | |
| fillColor : "rgba(151,187,205,0.5)", | |
| strokeColor : "rgba(151,187,205,1)", | |
| pointColor : "rgba(151,187,205,1)", | |
| pointStrokeColor : "#fff", | |
| data : total | |
| } | |
| ] | |
| } | |
| var myLine = new Chart(document.getElementById("canvas").getContext("2d")).Line(lineChartData); | |
| }) | |
| </script> | |
| </body> | |
| </html> |
@andrewxhill,
this is a dangerous approach as you are disclosing your sql credentials to whoever visits the page and clicks "view page source".
The SQL is better to be processed in php (or any other server side programming language)
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Hi Andrewxhill,
Thank you for your script, can you tell me where do i can connect to my sql?
Best regard!