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bar.html
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Created
Mon, Oct 21, 11:22
Size
5 KB
Mime Type
text/html
Expires
Wed, Oct 23, 11:22 (1 d, 21 h)
Engine
blob
Format
Raw Data
Handle
21836027
Attached To
R2664 SHRINE MedCo Fork
bar.html
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<!doctype html>
<html>
<head>
<title>
Bar Chart
</title>
<script
src=
"http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"
></script>
<script
src=
"../dist/Chart.bundle.js"
></script>
<style>
canvas
{
-
moz
-
user
-
select
:
none
;
-
webkit
-
user
-
select
:
none
;
-
ms
-
user
-
select
:
none
;
}
</style>
</head>
<body>
<div
id=
"container"
style=
"width: 75%;"
>
<canvas
id=
"canvas"
></canvas>
</div>
<button
id=
"randomizeData"
>
Randomize Data
</button>
<button
id=
"addDataset"
>
Add Dataset
</button>
<button
id=
"removeDataset"
>
Remove Dataset
</button>
<button
id=
"addData"
>
Add Data
</button>
<button
id=
"removeData"
>
Remove Data
</button>
<script>
var
MONTHS
=
[
"January"
,
"February"
,
"March"
,
"April"
,
"May"
,
"June"
,
"July"
,
"August"
,
"September"
,
"October"
,
"November"
,
"December"
];
var
randomScalingFactor
=
function
()
{
return
(
Math
.
random
()
>
0.5
?
1.0
:
-
1.0
)
*
Math
.
round
(
Math
.
random
()
*
100
);
};
var
randomColorFactor
=
function
()
{
return
Math
.
round
(
Math
.
random
()
*
255
);
};
var
randomColor
=
function
()
{
return
'rgba('
+
randomColorFactor
()
+
','
+
randomColorFactor
()
+
','
+
randomColorFactor
()
+
',.7)'
;
};
var
barChartData
=
{
labels
:
[
"January"
,
"February"
,
"March"
,
"April"
,
"May"
,
"June"
,
"July"
],
datasets
:
[{
label
:
'Dataset 1'
,
backgroundColor
:
"rgba(220,220,220,0.5)"
,
data
:
[
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
()]
},
{
hidden
:
true
,
label
:
'Dataset 2'
,
backgroundColor
:
"rgba(151,187,205,0.5)"
,
data
:
[
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
()]
},
{
label
:
'Dataset 3'
,
backgroundColor
:
"rgba(151,187,205,0.5)"
,
data
:
[
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
(),
randomScalingFactor
()]
}]
};
window
.
onload
=
function
()
{
var
ctx
=
document
.
getElementById
(
"canvas"
).
getContext
(
"2d"
);
window
.
myBar
=
new
Chart
(
ctx
,
{
type
:
'bar'
,
data
:
barChartData
,
options
:
{
// Elements options apply to all of the options unless overridden in a dataset
// In this case, we are setting the border of each bar to be 2px wide and green
elements
:
{
rectangle
:
{
borderWidth
:
2
,
borderColor
:
'rgb(0, 255, 0)'
,
borderSkipped
:
'bottom'
}
},
responsive
:
true
,
legend
:
{
position
:
'top'
,
},
title
:
{
display
:
true
,
text
:
'Chart.js Bar Chart'
}
}
});
};
$
(
'#randomizeData'
).
click
(
function
()
{
var
zero
=
Math
.
random
()
<
0.2
?
true
:
false
;
$
.
each
(
barChartData
.
datasets
,
function
(
i
,
dataset
)
{
dataset
.
backgroundColor
=
randomColor
();
dataset
.
data
=
dataset
.
data
.
map
(
function
()
{
return
zero
?
0.0
:
randomScalingFactor
();
});
});
window
.
myBar
.
update
();
});
$
(
'#addDataset'
).
click
(
function
()
{
var
newDataset
=
{
label
:
'Dataset '
+
barChartData
.
datasets
.
length
,
backgroundColor
:
randomColor
(),
data
:
[]
};
for
(
var
index
=
0
;
index
<
barChartData
.
labels
.
length
;
++
index
)
{
newDataset
.
data
.
push
(
randomScalingFactor
());
}
barChartData
.
datasets
.
push
(
newDataset
);
window
.
myBar
.
update
();
});
$
(
'#addData'
).
click
(
function
()
{
if
(
barChartData
.
datasets
.
length
>
0
)
{
var
month
=
MONTHS
[
barChartData
.
labels
.
length
%
MONTHS
.
length
];
barChartData
.
labels
.
push
(
month
);
for
(
var
index
=
0
;
index
<
barChartData
.
datasets
.
length
;
++
index
)
{
//window.myBar.addData(randomScalingFactor(), index);
barChartData
.
datasets
[
index
].
data
.
push
(
randomScalingFactor
());
}
window
.
myBar
.
update
();
}
});
$
(
'#removeDataset'
).
click
(
function
()
{
barChartData
.
datasets
.
splice
(
0
,
1
);
window
.
myBar
.
update
();
});
$
(
'#removeData'
).
click
(
function
()
{
barChartData
.
labels
.
splice
(
-
1
,
1
);
// remove the label first
barChartData
.
datasets
.
forEach
(
function
(
dataset
,
datasetIndex
)
{
dataset
.
data
.
pop
();
});
window
.
myBar
.
update
();
});
</script>
</body>
</html>
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