I am working on an application where I am trying to plot a similar graph to what is plotted at Open Weather. I am using the FlotJS library to query their API and plot the graphs.
Here is my code. I apologize for the verbosity.
/*
* RUN PAGE GRAPHS
*/
// load all flot plugins
loadScript("js/plugin/flot/jquery.flot.cust.min.js", function(){
loadScript("js/plugin/flot/jquery.flot.resize.min.js", function(){
loadScript("js/plugin/flot/jquery.flot.time.min.js", function(){
loadScript("js/plugin/flot/jquery.flot.tooltip.min.js", generatePageGraphs);
});
});
});
function generatePageGraphs(){
var fetchWeatherUrl = '//api.openweathermap.org/data/2.5/forecast?lat=' + farmLat + '&lon=' + farmLng;
$.ajax({
method: 'get',
dataType: "jsonp",
url: fetchWeatherUrl,
success: function(response){
var temp = [];
var humidity = [];
var rain = [];
$.each(response.list, function(i, item){
if(moment(item.dt, 'X').isSame(moment(), 'day')){
var temperature = ( ( parseFloat(item.main.temp)-273.15 )*1.80 ).toFixed(0);
temp.push([moment(item.dt, 'X').valueOf(), temperature]);
humidity.push([moment(item.dt, 'X').valueOf(), parseFloat(item.main.humidity)]);
if(item.rain != undefined){
rain.push([moment(item.dt, 'X').valueOf(), parseFloat(item.rain["3h"])]);
}
}
});
var mainWeatherGraphData = [{
label: "Temperature",
data: temp,
lines: {
show: true
},
points: {
show: true
}
},
{
label: "Humidity",
data: humidity,
lines: {
show: true
},
points: {
show: true
},
yaxis: 2
},
{
label: "Rain",
data: rain,
bars: {
show: true,
barWidth: 1000*60*30,
align: 'center'
},
yaxis: 3
}];
var mainWeatherGraphOptions = {
xaxis : {
mode : "time",
},
yaxes : [
{
position: 'left'
},
{
position: 'right'
},
{
position: 'right'
}
],
tooltip : true,
tooltipOpts : {
content : "<b>%s</b> on <b>%x</b> will be <b>%y</b>",
dateFormat : "%y-%m-%d",
defaultTheme : false
},
legend : {
show : true,
noColumns : 1, // number of colums in legend table
labelFormatter : null, // fn: string -> string
labelBoxBorderColor : "#000", // border color for the little label boxes
container : null, // container (as jQuery object) to put legend in, null means default on top of graph
position : "ne", // position of default legend container within plot
margin : [0, 5], // distance from grid edge to default legend container within plot
backgroundColor : "#efefef", // null means auto-detect
backgroundOpacity : 0.4 // set to 0 to avoid background
},
grid : {
hoverable : true,
clickable : true
}
};
var mainWeatherGraph = $.plot($("#mainWeatherGraph"), mainWeatherGraphData, mainWeatherGraphOptions);
}
});
// Daily forecast
fetchForecastUrl = 'http://api.openweathermap.org/data/2.5/forecast/daily?lat=' + farmLat + '&lon=' + farmLng;
$.ajax({
method: 'get',
dataType: "jsonp",
url: fetchForecastUrl,
success: function(response){
var temp = [];
var humidity = [];
var rain = [];
$.each(response.list, function(i, item){
var temperature = ( ( parseFloat(item.temp.day)-273.15 )*1.80 ).toFixed(0);
temp.push([moment(item.dt, 'X').valueOf(), temperature]);
humidity.push([moment(item.dt, 'X').valueOf(), parseFloat(item.humidity)]);
if(item.rain != undefined){
rain.push([moment(item.dt, 'X').valueOf(), parseFloat(item.rain)]);
}
});
var dailyForecastGraphData = [{
label: "Temperature",
data: temp,
lines: {
show: true
},
points: {
show: true
},
},
{
label: "Humidity",
data: humidity,
lines: {
show: true
},
points: {
show: true
},
yaxis: 2
},
{
label: "Rain",
data: rain,
bars: {
show: true,
barWidth: 1000*60*60*8,
align: 'center'
},
yaxis: 3
}];
var dailyForecastGraphOptions = {
xaxis : {
mode : "time",
},
yaxes : [
{
position: 'left'
},
{
position: 'right'
},
{
position: 'right'
}
],
tooltip : true,
tooltipOpts : {
content : "<b>%s</b> on <b>%x</b> will be <b>%y</b>",
dateFormat : "%y-%m-%d",
defaultTheme : false
},
legend : {
show : true,
noColumns : 1, // number of colums in legend table
labelFormatter : null, // fn: string -> string
labelBoxBorderColor : "#000", // border color for the little label boxes
container : null, // container (as jQuery object) to put legend in, null means default on top of graph
position : "ne", // position of default legend container within plot
margin : [0, 5], // distance from grid edge to default legend container within plot
backgroundColor : "#efefef", // null means auto-detect
backgroundOpacity : 0.4 // set to 0 to avoid background
},
grid : {
hoverable : true,
clickable : true
}
};
var dailyForecastGraph = $.plot($("#dailyForecastGraph"), dailyForecastGraphData, dailyForecastGraphOptions);
}
});
}
The two graphs are almost identical except the data which they are portraying.
The main (first) graph has the all the y axis plotted correctly. And we can see the axis for all 3 correctly. The daily (second) graph does have the rain y axis, although the options for them are similar.
Other than this, all tooltips are working fine but the temperature tooltips where I can see the placeholder %y and not the real value.
I have been debugging this code for the past 2 hours and I am not a Flot expert and I am not able to figure what is wrong.
Can anybody look at the code and tell me what is going wrong? Thank you in advance.
