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>
Related
I want to create a single bar using a bar chart. The setup is that the user can select different choices (representing the colors). In this example (codesandbox link below) I have a bar that has a max value of 90.000. The three chosen values are 20.000, 30.000 and 15.000, totaling 65.000.
Now, my goal is to have a border around this entire bar, not just the colors. In the image below this is represented with the red border. Currently I do this by putting a container element around my canvas element, but I would like to do this in the canvas itself, without using a container element. Someone has an idea on how to do this?
Codesandbox link
You need to define different dataset properties such as borderSkipped, borderRadius, borderWidth to achieve what you're looking for.
Don't know why but I also had to define the data of the dataset at the bottom as a floating bar in order to see the rounded border.
data: [[0, 20000]]
Please take a look at the runnable code below and see how it could work.
new Chart('chart', {
type: 'bar',
data: {
labels: [''],
datasets: [{
label: "currentAmount",
data: [[0, 20000]],
backgroundColor: "#bbb",
borderColor: "#f00",
borderWidth: 2,
borderSkipped: 'top',
borderRadius: 30,
barPercentage: 0.5
},
{
label: "amount 1",
data: [30000],
backgroundColor: "orange",
borderColor: "#f00",
borderWidth: { left: 2, right: 2 },
barPercentage: 0.5
},
{
label: "amount 2",
data: [15000],
backgroundColor: "green",
borderColor: "#f00",
borderWidth: { left: 2, right: 2 },
barPercentage: 0.5
},
{
label: "remaining",
data: [25000],
backgroundColor: "#fff",
borderColor: "#f00",
borderWidth: 2,
borderSkipped: 'bottom',
borderRadius: 30,
barPercentage: 0.5
},
]
},
options: {
plugins: {
legend: {
display: false
},
tooltip: {
displayColors: false
}
},
scales: {
y: {
display: false,
stacked: true,
beginsAtZero: true
},
x: {
display: false,
stacked: true
}
}
}
});
canvas {
max-width: 200px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.8.0/chart.min.js"></script>
<canvas id="chart"></canvas>
I'm having trouble on reload chart with updated details, I'm showing graph based on user activity on daily basis, on initial load with preset values the graph is formed precisely
Here I'm using flot chart library, in that flot chart library I'm using line graph
This is initial graph
But when I use custom values instead of loading a new graph with updated values, the custom values is get appended to the right end of x-axis on the graph.
When I use the custom values, the graph looks like,
In second graph, the included data will added to its old data at right side instead of showing it in correct order
here is my code for first graph, input data in vm.allsessionReport
input data will get by programmatic
vm.allSessionReport = [];
vm.sessionData = [{
"color": "#7dc7df",
"data": vm.allSessionReport
}];
vm.allSessionReport = [
["2017-06-30", 0],
["2017-07-01", 0],
["2017-07-02", 0],
["2017-07-03", 0],
["2017-07-04", 17],
["2017-07-05", 0],
["2017-07-06", 0],
["2017-07-07", 0]
]
vm.sessionData = [{
"color": "#7dc7df",
"data": vm.allSessionReport
}];
console.log('session data 2nd', vm.sessionData)
vm.sessionOptions = {
series: {
lines: {
show: true,
fill: 0.01
},
points: {
show: true,
radius: 4
}
},
grid: {
borderColor: '#eee',
borderWidth: 1,
hoverable: true,
backgroundColor: '#fcfcfc'
},
tooltip: true,
tooltipOpts: {
content: function (label, x, y) { return x + ' : ' + y; }
},
xaxis: {
position: ($scope.app.layout.isRTL ? 'top' : 'bottom'),
tickColor: '#eee',
mode: 'categories'
},
yaxis: {
position: ($scope.app.layout.isRTL ? 'right' : 'left'),
tickColor: '#eee'
},
shadowSize: 0
};
code for my second graph, input data has changed to
vm.allSessionReport = [];
vm.sessionData = [{
"color": "#7dc7df",
"data": vm.allSessionReport
}];
vm.allSessionReport = [
["2017-06-28", 0],
["2017-06-29", 0],
["2017-06-30", 0],
["2017-07-01", 0],
["2017-07-02", 0],
["2017-07-03", 0],
["2017-07-04", 17],
["2017-07-05", 0],
["2017-07-06", 0],
["2017-07-07", 0]
]
vm.sessionData = [{
"color": "#7dc7df",
"data": vm.allSessionReport
}];
console.log('session data 2nd', vm.sessionData)
vm.sessionOptions = {
series: {
lines: {
show: true,
fill: 0.01
},
points: {
show: true,
radius: 4
}
},
grid: {
borderColor: '#eee',
borderWidth: 1,
hoverable: true,
backgroundColor: '#fcfcfc'
},
tooltip: true,
tooltipOpts: {
content: function (label, x, y) { return x + ' : ' + y; }
},
xaxis: {
position: ($scope.app.layout.isRTL ? 'top' : 'bottom'),
tickColor: '#eee',
mode: 'categories'
},
yaxis: {
position: ($scope.app.layout.isRTL ? 'right' : 'left'),
tickColor: '#eee'
},
shadowSize: 0
};
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'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.