I'm trying to display a flot chart with 3 arrays. To make things simple the arrays are all the same:
[[1,1],[2,3],[3,6],[4,10],[5,15],[6,21]]
I create the arrays with the following ruby code:
def flot_chart_series
total=0
foo=[]
(1..6).each do |number|
foo.push [number, total+=number]
end
foo
end
Here is my Erb processed Javascript code:
var fb_shares = <%= flot_chart_series %>;
var twitter_shares = <%= flot_chart_series %>;
var email_shares = <%= flot_chart_series %>;
var plot = $.plot($("#statsChart"),
[ { data: fb_shares, label: "Facebook shares"},
{ data: twitter_shares, label: "Twitter shares" },
{ data: email_shares, label: "Email shares" }], {
series: {
lines: { show: true,
lineWidth: 1,
fill: true,
fillColor: { colors: [ { opacity: 0.1 }, { opacity: 0.13 }, { opacity: 0.15 } ] }
},
points: { show: true,
lineWidth: 2,
radius: 3
},
shadowSize: 0,
stack: true
},
grid: { hoverable: true,
clickable: true,
tickColor: "#f9f9f9",
borderWidth: 0
},
legend: {
// show: false
labelBoxBorderColor: "#fff"
},
colors: ["#3071eb", "#30a0eb", "#a7b5c5"],
xaxis: {
ticks: [[1, "JAN"], [2, "FEB"], [3, "MAR"], [4,"APR"], [5,"MAY"], [6,"JUN"],
[7,"JUL"], [8,"AUG"], [9,"SEP"], [10,"OCT"], [11,"NOV"], [12,"DEC"]],
font: {
size: 12,
family: "Open Sans, Arial",
variant: "small-caps",
color: "#697695"
}
},
yaxis: {
ticks:3,
tickDecimals: 0,
font: {size:12, color: "#9da3a9"}
}
});
The problem is that the chart doesnt plot 3 of the same lines, it creates lines that are increasing in value. Here is a screen shot of the graph: flot chart screen shot
Any ideas what I'm doing wrong?
As #captain hints at in his comment this is because you are using the stacking plugin with stack: true. This is going to stack the 3 identical lines on top of each other.
Compare these fiddles: stack true and stack false.
If you don't want to stack just get rid of the plugin (less javascript == faster loading) and the stack: true option.
Related
I use a flotcharts JS linechart to display the value of different stock tradepositions. The user can show/hide each trade on the chart via a checkbox above the chart.
By default, linecharts use default or predefined colors from me in the order the series are created. So the first line gets color1, the second color 2 etc.
This is not very good for this situation, because when the user hides the line for trade one, the previously trade two becomes the new "first line" and also changes its color from color 2 to color 1.
As the data represented by the line are still the same this behaviour is very irritating.
To solve this I would like to assign a color to a series by it's name, id or similar rather than by the order it was created on the chart, as this identifier stays the same even after adding/removing other lines from the chart.
How can I do this?
Currently I use a code like this to set the color for the first, second etc line.
var datatoprint=[];
for(var key in arrTradeSymbols){
if (arrTradeSymbols[key].visible==true){
datatoprint.push(arrTradeSymbols[key].data);
jQuery("#symb_"+arrTradeSymbols[key].tradeid).prop("checked",true);
}
}
var plot = $.plot(jQuery("#kt_flotcharts_pl"), datatoprint, {
legend: {
position: "nw",
},
series: {
lines: {
show: true,
lineWidth: 2,
fill: false,
},
points: {
show: true,
radius: 3,
lineWidth: 1,
color: '#00ff00'
},
shadowSize: 2
},
grid: {
hoverable: true,
clickable: true,
tickColor: "#eee",
borderColor: "#eee",
borderWidth: 1
},
colors: ['#0083d0', '#1dc9b7'],
xaxis: {
mode: "time",
tickSize: [5, "day"],
tickLength: 0,
tickColor: "#eee",
},
yaxis: {
ticks: 11,
tickDecimals: 0,
tickColor: "#eee",
}
});
That's easy: just supply an array of objects with the color along with the data instead of only the data as an array.
Example snippet:
var arrTradeSymbols = {
trade1: {
color: "red",
data: [
[1, 3],
[2, 4],
[3.5, 3.14]
]
},
trade2: {
color: "green",
data: [
[1, 4],
[2, 11.01],
[3.5, 5.14]
]
}
};
function run() {
var datatoprint = [];
for (var key in arrTradeSymbols) {
if ($("#" + key).is(":checked")) {
datatoprint.push(arrTradeSymbols[key]);
}
}
$.plot($("#kt_flotcharts_pl"), datatoprint, {
legend: {
position: "nw",
},
series: {
lines: {
show: true,
lineWidth: 2,
fill: false
},
points: {
show: true,
radius: 3,
lineWidth: 1
},
shadowSize: 2
},
grid: {
hoverable: true,
clickable: true,
tickColor: "#eee",
borderColor: "#eee",
borderWidth: 1
},
xaxis: {
ticks: 5
},
yaxis: {
ticks: 11,
tickDecimals: 0,
tickColor: "#eee",
}
});
}
run();
$("input").on("input", run);
#kt_flotcharts_pl {
width: 400px;
height: 200px;
border: 1px solid black;
}
label {
cursor: pointer;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/flot/0.8.2/jquery.flot.min.js"></script>
<label><input type="checkbox" id="trade1" checked> Red</label>
<label><input type="checkbox" id="trade2" checked> Green</label>
<div id="kt_flotcharts_pl"></div>
I have a similar problem like posted on highchart chart redraw method is not refreshing the chart but I am working with polar chart, so the solution given there is not solving my issue.
So, the code below is showing the highchart correctly, but doesn't refreshing data. Now I'm asking for advice/help how to solve it.
$(function() {
$.getJSON('wind_graph.php?callback=?', function(dataWind) {
var direction = Wind_direction;
var polarOptions = {
chart: {
polar: true,
events : {
load : function () {
setInterval(function(){
RefreshDataWind();
}, 1000);
}
}
},
title: {
text: 'Wind Direction'
},
pane: {
startAngle: 0,
},
tooltip: {
enabled: false
},
legend: {
enabled: false
},
// the value axis
xAxis: {
tickInterval: 15,
min: 0,
max: 360,
labels: {
formatter: function() {
return this.value + '°';
}
}
},
plotOptions: {
series: {
pointStart: 0,
pointInterval: 30,
marker: {
enabled: false
},
},
}
};
// The polar chart
$('#graph-1').highcharts(Highcharts.merge(polarOptions, {
yAxis: {
tickInterval: 5,
min: 0,
max: 25,
visible: false
},
credits: {
enabled: false
},
series: [{
type: 'line',
name: 'Direction',
data: [
[0, 0],
[direction, 20]
],
lineColor: '#7cb5ec',
enableMouseTracking: false,
visible: true,
lineWidth: 2,
zIndex: 8,
}
]
}));
function RefreshDataWind()
{
var chart = $('#graph-1').highcharts();
$.getJSON('wind_graph.php?callback=?', function(dataWind)
{
var direction = Wind_direction;
chart.redraw();
});
chart.redraw();
}
});
});
To be more precise: if given Wind_direction value is equal to 0 (zero), then I need to display on chart the following "spline":
{
type: 'spline',
name: 'CentralCicrleCalmWind1',
data: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
pointInterval: 30,
pointStart: 0,
lineColor: windLineColor,
enableMouseTracking: false,
lineWidth: windLineWidth,
visible: showCentralCicrleCalmWind,
}, {
type: 'spline',
name: 'CentralCicrleCalmWind2',
data: [2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5],
pointInterval: 30,
pointStart: 0,
lineColor: windLineColor,
enableMouseTracking: false,
lineWidth: windLineWidth,
visible: showCentralCicrleCalmWind,
}
So as You can see, I have additional parameters like "showCentralCircleCalmWind" set to TRUE or FALSE depends on the given "Wind_direction" value and logic for this I have prepared at top of my code (not pasted here).
The thing what I need is:
Read value of variable in given JSON
Set variable "direction" at the begining of javascript code
Display the chart using higcharts library
Read the new value from JSON
Change the variable "direction" to the new value.
Display the new chart for a given value
Back to the point number 4...
Your problem may be helped by using the setData() function (see http://api.highcharts.com/highcharts/Series.setData).
In your example, I'd suggest the following:
function RefreshDataWind()
{
var chart = $('#graph-1').highcharts();
$.getJSON('wind_graph.php?callback=?', function(dataWind)
{
var direction = Wind_direction;
chart.series[0].setData(direction);
/* assuming "direction" to be an array like [1, 2, 3] */
});
}
The following Highcharts demo shows you how this works: http://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/highcharts/members/series-setdata/
Depending on the format of your "Wind_direction" variable, you may need to have a statement before setData() that explicitly makes it an array, since that's what the function is expecting.
I'd also suggest you remove the second instance of chart.redraw(), as the setData() makes that unnecessary.
I hope this is helpful for you!
Thanks in advance for your time.
I have the following code for a Flot Chart
<script src="js/plugins/flot/jquery.flot.js"></script>
<script src="js/plugins/flot/jquery.flot.tooltip.min.js"></script>
<script src="js/plugins/flot/jquery.flot.spline.js"></script>
<script src="js/plugins/flot/jquery.flot.resize.js"></script>
<script src="js/plugins/flot/jquery.flot.categories.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(function() {
var data = [{
"label": "Commission",
"color": "#1ab394",
"data": [["Oct", ],["Nov", ],["Dec", ],["Jan", ],["Feb", ],["Mar", ],["Apr", ],["May", 14],["Jun", 0],["Jul", 5],["Aug", 12],["Sep", 7]]
}, {
"label": "EPL",
"color": "#1C84C6",
"data": [["Oct", 0],["Nov", 0],["Dec", 0],["Jan", 0],["Feb", 0],["Mar", 0],["Apr", 0],["May", 1.75],["Jun", 0.00],["Jul", 0.17],["Aug", 0.39],["Sep", 0.35]]
}];
var options = {
series: {
lines: {
show: false,
fill: true
},
splines: {
show: true,
tension: 0.4,
lineWidth: 1,
fill: 0.4
},
points: {
radius: 0,
show: true
},
shadowSize: 2
},
grid: {
borderColor: '#eee',
borderWidth: 1,
hoverable: true,
backgroundColor: '#fff'
},
tooltip: true,
tooltipOpts: {
content: function (label, x, y) { return x + ' : ' + y; }
},
xaxis: {
tickColor: '#eee',
mode: 'categories'
},
yaxis: {
tickColor: '#eee'
},
shadowSize: 0
};
var chart = $('.dashchart');
if(chart.length)
$.plot(chart, data, options);
});
})(window, document, window.jQuery);
</script>
The docs state...
By default, the labels are ordered as they are met in the data series.
If you need a different ordering, you can specify "categories" on the
axis options and list the categories there:
https://code.google.com/p/flot/source/browse/trunk/jquery.flot.categories.js?r=341
However the x axis ordering is not the same as the data series, as seen in the screenshot below
Any idea why this may be.
I figured this out. Hope it helps someone some day
Seems Flot doesnt like empty values in the data series
"data": [["Oct", ],["Nov", ],["Dec", ],["Jan", ],["Feb", ],["Mar", ],["Apr", ],["May", 14],["Jun", 0],["Jul", 5],["Aug", 12],["Sep", 7]]
changed to this and it works fine
"data": [["Oct", 0],["Nov", 0],["Dec", 0],["Jan", 0],["Feb", 0],["Mar", ]0,["Apr", 0],["May", 14],["Jun", 0],["Jul", 5],["Aug", 12],["Sep", 7]]
I have created a user graph for my codeigniter project. The bar fill is set at the default. But I would like the BARS to change it so it looks like the bars on this image: http://www.riwakawebsitedesigns.com/offsite/images/userchart.PNG
I echo the data from my controller. But just would like to know how to make bars and bar-border look like the image above.
When I add these shadowSize: 0, colors: ['#9FD5F1', '#1065D2'], to the series bar it does not work.
<script type="text/javascript">
$(document).ready(function () {
var data = <?php echo $data;?>;
$.plot($("#chart-user"), [data], {
series: {
bars: {
shadowSize: 0,
show: true,
fill: true,
//fillColor: '#9FD5F1'
},
grid: {
backgroundColor: '#FFFFFF',
hoverable: true
}
}
});
});
</script>
I had to do this below to make it work added color below series
<script type="text/javascript">
$(document).ready(function () {
var data = <?php echo $data;?>;
$.plot($("#chart-user"), [data], {
series: {
color: '#1065D2',
bars: {
shadowSize: 0,
show: true,
fill: true,
},
grid: {
backgroundColor: '#FFFFFF',
hoverable: true
}
}
});
});
</script>
I finally found an answer to this. For Bars you specify the fillColor for each series. Then the global Series Colors. The Bar will be filled with the fillColor and use the Colors for the lines.
The below example is using 2 different data arrays d1 (Absent Time), d2 (Time Worked) and stacks for each bar for different time spans
E.g:
var chartOptions = {
xaxis: {
min: 0,
max: 100,
ticks: [[25, '25%'], [50, '50%'], [75, '75%'], [100, '100%']]
},
yaxis: {
ticks: [[1, 'Today'], [2, 'Yesterday'], [3, 'This Week'],[4, 'Last Week']],
position: 'right',
font: { size: 12 }
},
series: {
stack : true,
bars: {
horizontal: true,
show: true
}
},
colors: ['rgb(52,95,14)', 'rgb(108,105,19)'],
};
$.plot($('#placeHolder'), [{ data:d1, bars:{fillColor: 'rgb(194, 238, 155)', fill: 0.9}}, { data:d2, bars:{fillColor: 'rgb(241, 239, 177)', fill: 0.9}}], chartOptions);
The displayed chart
I have a chart with ordering by date.
My problem is the chart lines joining false from start to end.
My options:
var options =
{
grid:
{
color: "#dedede",
borderWidth: 1,
borderColor: "transparent",
clickable: true,
hoverable: true
},
series: {
grow: {active:false},
lines: {
show: true,
fill: false,
lineWidth: 2,
steps: false
},
points: {
show:true,
radius: 5,
lineWidth: 3,
fill: true,
fillColor: "#000"
}
},
legend: { position: "nw", backgroundColor: null, backgroundOpacity: 0, noColumns: 2 },
yaxis: { tickSize:50 },
xaxis: {
mode: "time",
tickFormatter: function(val, axis) {
var d = new Date(val);
return d.getUTCDate() + "/" + (d.getUTCMonth() + 1);
}
},
colors: [],
shadowSize:1,
tooltip: true,
tooltipOpts: {
content: "%s : %y.0",
shifts: {
x: -30,
y: -50
},
defaultTheme: false
}
};
Note: I'm not re-ordering any data. Just giving the timestamp with this function:
function gd(year, month, day) {
return new Date(year, month - 1, day).getTime();
}
Setting the data like this:
$.each(e.data, function(i, e){
data.push([gd(parseInt(e['year']), parseInt(e['month']), parseInt(e['day'])), parseInt(e['value'])]);
});
var entity = {
label: e.campaign,
data: data,
lines: {fillColor: randomColor},
points: {fillColor: randomColor}
};
entities.push(entity);
Console log:
When creating line charts, flot will connect the data points using the order from the data series, ignoring the actual x-coordinates. That's why data series should be in ascending order.
A minimal example (using your data in ascending order):
var d1 = [
[1401310800000, 275],
[1401397200000, 270],
[1401483600000, 313],
[1401570000000, 279],
[1401656400000, 216],
[1401742800000, 255],
[1401829200000, 244],
[1401915600000, 70]
];
$.plot("#chart", [ d1 ]);
Here is a jsfiddle showing the chart.