Title for x and y axis in Flot graph
Is it possible to show title for x and y axis in flot graph?
Following is the code:
$.plot($("#placeholder_1w"), [d], {
series: {
lines: { show: true, fill: false, fillColor: "red" },
points: { show: true, fill: true,fillColor: "red" }
},
grid: { hoverable: true, clickable: true , color: 'green'},
xaxis: {
mode: "time",
minTickSize: [1, "day"],
min: (myWeekDate).getTime(),
max: (new Date()).getTime()
},
colors: ["red", "green", "#919733"]
});
Answer
Flot does not support axis labels by itself, but you can fairly easily add them using html and css, and a bit of modification to your flot options.
The demo on the flot site has a y axis label. It is created by appending a div with certain classes to the flot container:
var xaxisLabel = $("<div class='axisLabel xaxisLabel'></div>")
.text("My X Label")
.appendTo($('#placeholder_1w'));
var yaxisLabel = $("<div class='axisLabel yaxisLabel'></div>")
.text("Response Time (ms)")
.appendTo($('#placeholder_1w'));
Then, you need CSS like this:
.axisLabel {
position: absolute;
text-align: center;
font-size: 12px;
}
.xaxisLabel {
bottom: 3px;
left: 0;
right: 0;
}
.yaxisLabel {
top: 50%;
left: 2px;
transform: rotate(-90deg);
-o-transform: rotate(-90deg);
-ms-transform: rotate(-90deg);
-moz-transform: rotate(-90deg);
-webkit-transform: rotate(-90deg);
transform-origin: 0 0;
-o-transform-origin: 0 0;
-ms-transform-origin: 0 0;
-moz-transform-origin: 0 0;
-webkit-transform-origin: 0 0;
}
If you need to support IE6/7, there's more trickery to deal with unfortunately - you'd want your body tag to be labelled with the class of "ie6" or "ie7" by doing something like this:
<!--[if IE 6]><body class="ie ie6"><![endif]-->
<!--[if IE 7]><body class="ie ie7"><![endif]-->
<!--[if IE 8]><body class="ie ie8"><![endif]-->
<!--[if IE 9]><body class="ie ie9"><![endif]-->
<!--[if gt IE 9]><body class="ie"><![endif]-->
<!--[if !IE ]><!--><body><!--<![endif]-->
And then this additional CSS:
.ie7 .yaxisLabel, .ie8 .yaxisLabel {
top: 40%;
font-size: 36px;
filter: progid:DXImageTransform.Microsoft.Matrix(M11=0.0, M12=0.33, M21=-0.33, M22=0.0,sizingMethod='auto expand');
}
Finally, in my attempts to do this, I found I needed to specify a fixed labelWidth for the y axis and a fixed labelHeight for the xaxis.
See a working example here: http://jsfiddle.net/ryleyb/U82Dc/