We Keep Coding

redraw method is not refreshing polar chart

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!

HighCharts - Add vertical lines from a desire point

Need to draw vertical lines from a desired point rather than starting from 0.
plotLines: [{
color: '#FF0000',
width: 1,
value: 4
}, {
color: '#FF0000',
width: 1,
value: 7
}],
Here is the fiddler link: http://jsfiddle.net/bpswt3tr/4/
My requirement is to draw first vertical line from when y value is 110.2 and 2nd line from when y value is 135.6 instead of starting from zero. i.e above the plot line only. Please suggest how can I achieve this? Thanks.

Considering the documentation it is unlikely that HighCharts supports this by default, as you are only allowed to associate a value of the current axis with the line.
You might need a preprocessing step that inverts you function to get the appropriate X values. Something like:
invert(data, Y) -> list of X values with data[X] = Y

You can do this on the chart.events.load call. If you know these are the points you want to add marker elements to then it is fairly straightforward. You first get the current max label value for the yAxis. Then you add a series to the chart with the starting point being your series' value and the second point being the max viewable yAxis value. Then do the same for the second point you want to add a bar to. Then, you need to re-set the yAxis max value to the initial state because highcharts will try to increase the scale to accommodate the new points.
chart: {
events: {
load: function () {
var yMAx = this.yAxis[0].max;
console.log(yMAx);
this.addSeries({
data: [{
x: 4,
y: 110.2,
marker: {
symbol: 'triangle'
}
}, {
x: 4,
y: yMAx,
marker: {
symbol: 'triangle-down'
}
}, ],
showInLegend: false,
color: 'red',
marker: {
enabled: true
}
});
this.addSeries({
data: [{
x: 7,
y: 135.6,
marker: {
symbol: 'triangle'
}
}, {
x: 7,
y: yMAx,
marker: {
symbol: 'triangle-down'
}
}, ],
showInLegend: false,
color: 'red',
marker: {
enabled: true
}
});
this.yAxis[0].update({
max: yMAx
});
}
}
}
Sample demo.

Drag and drop overlapping points

I have a graph plotted with a multitude of lines, a rather big figure overlapping the lines and ontop of that is a point that is capable of being drag and dropped all over the plot by the user.
The problem I'm facing currently is that as soon as the user drags and drops the point straight ontop of a line or a point of the figure, the user is unable to drag and drop the point away. I have set up a fiddle with my current setup.
JavaScript/jQuery code:
$(function() {
var startPoint = [[7.00, 0]];
var line10 = HHIsoPleth(7.00, 7.80, 10);
var line120 = HHIsoPleth(7.00, 7.80, 120);
var options = {
series: {
points: {
editMode: "none",
show: true,
radius: 0,
symbol: "circle",
fill: true,
hoverable: false,
},
lines: {
editMode: "none",
editable: false,
hoverable: false,
clickable: false
}
},
yaxes: [ {
position: "left",
min: 0, max: 60,
tickSize: 4,
} ],
xaxes: [ {
position: "bottom",
min: 7.00, max: 7.80,
} ],
grid: {
backgroundColor: "transparent",
editable: true,
hoverable: true,
clickable: false,
},
legend: {
position: "nw"
},
};
var data = [
{ data: line10, label: "PCO2", lines: { show: true, lineWidth: 1 }, points: { show: false }, editable: false, clickable: false, hoverable: false, color: "#FF0000" },
{ data: line120, lines: { show: true, lineWidth: 1 }, points: { show: false }, editable: false, clickable: false, hoverable: false, color: "#FF0000" },
{ data: startPoint, label: "Bloedzuur gehalte", lines: { show: true }, points: { show: true, radius: 3 }, editable: true, editMode: 'xy', color: '#00FF00' },
];
var plot = $.plot($("#flot-placeholder"), data, options);
// Drag and drop
$("#flot-placeholder").bind("datadrop", function(event, pos, item) {
var PCO2 = getPCO2(pos.x1.toFixed(2), pos.y1.toFixed(2));
var pH = getPH(pos.y1.toFixed(2), PCO2);
var HCOmm = getHCO3(pH, PCO2);
updatePoint(pH, HCOmm);
});
// Generate red lines / isopleths
function HHIsoPleth(minPH, maxPH, PCO2){
var isoPleth = [];
for (var i = minPH; i < maxPH; i+=0.01){
HCOmm = (0.03 * PCO2 * Math.pow(10,i-6.1));
isoPleth.push([i,HCOmm]);
}
return isoPleth;
}
function getHCO3(ph, pco2) {
return 0.03 * pco2 * Math.pow(10, ph - 6.1);
}
function getPH(hco3, pco2) {
return 6.1 + Math.log10(hco3 / (0.03 * pco2));
}
function getPCO2(ph, hco3) {
return (hco3 / 0.03) * Math.pow(10, 6.1 - ph);
}
//Reset point
$("#davenportReset").click(function() {
updatePoint(7.00, 0);
});
function updatePoint(x, y) {
data[16].data[0] = [x, y];
$.plot($("#flot-placeholder"), data, options);
}
// Debug purpose, get the index of the point that is clicked
$("#placeholder").bind("plotdown", function(event,pos,item){
$("#log").append("\nplotdown(" + item.seriesIndex + ")");
});
});
Additional libraries: Flot.js, JUMFlot
HTML:
<input class="davenportInput" id="davenportReset" type="button" value="Reset Point" />
<div id="flot-placeholder" style="width:558px;height:511px"></div>
eventlog<textarea id="log" rows="15" cols="28"></textarea>
In the provided fiddle you'll see that you can drag and drop the green point all around the plot. But once you drop it ontop any of the red lines it is no longer possible to drag and drop the green point somewhere else. In the textarea you'll see that when you click the green point, plotdown(16) will be shown in the textarea. But will show plotdown(0-15) when it is clicked when the point is over any of the red/yellow lines.
Would it be possible to get the 16th data serie(the drag and drop point) when it's overlapping any of the red lines?
Using (once again) Mark's answer I solved it. One condition I had though was that I had to keep the green point above all other lines.
This is what I did:
var startPoint = [[7.00, 0]];
var invisPoint = [[7.00, 0]];
var line10 = HHIsoPleth(7.00, 7.80, 10);
var line120 = HHIsoPleth(7.00, 7.80, 120);
To create a invisible placeholder point.
I than added it to the data object
var data = [
{ data: invisPoint , lines: { show: false }, points: { show: false, radius: 3 }, editable: true, editMode: 'xy', color: '#00FF00' },
{ data: line10, label: "PCO2", lines: { show: true, lineWidth: 1 }, points: { show: false }, editable: false, clickable: false, hoverable: false, color: "#FF0000" },
{ data: line120, lines: { show: true, lineWidth: 1 }, points: { show: false }, editable: false, clickable: false, hoverable: false, color: "#FF0000" },
{ data: startPoint, label: "Bloedzuur gehalte", lines: { show: true }, points: { show: true, radius: 3 }, editable: true, editMode: 'xy', color: '#00FF00' },
];
And updated the updatePoint function
function updatePoint(x, y) {
var data = plot.getData();
data[0].data[0] = [x, y]; // Invisible point
data[17].data[0] = [x, y]; // Green point
plot.setData(data);
plot.draw();
}
This way, the invisible point gets selected and dragged and dropped. I simply use those coordinates to position the green point aswell.

Internally, flot or jumflot in this case, when you mousedown is searching the points to see if one is near enough to your mouse cursor. It searches the points in order and finds your line segment before the point. So, simple fix, place your move-able point first:
var data = [
{ data: startPoint, label: "Bloedzuur gehalte", lines: { show: true }, points: { show: true, radius: 3 }, editable: true, editMode: 'xy', color: '#00FF00' },
{ data: line10, label: "PCO2", lines: { show: true, lineWidth: 1 }, points: { show: false }, editable: false, clickable: false, hoverable: false, color: "#FF0000" },
....
In addition, update your plot like this:
function updatePoint(x, y) {
var data = plot.getData();
data[0].data[0] = [x, y];
plot.setData(data);
plot.draw();
}
Calling $.plot over and over again is expensive and will probably leak memory (it used to at least - not sure if it was every fixed).
Updated fiddle.

Adding new jqPlot charts to div dynamically makes the old ones empty

I have a div (overflow: auto) to which I dynamically add inner divs after a certain period. When a new one is added, it is added to the beginning. Each one of the inner divs have a jqPlot chart, and as long as there is just one it works fine, but as soon as another div is added two things happen with the old one(s):
The chart is moved further down in the div.
The chart has no plots or background (although it has axes marks).
According to the developer tools, all canvases are positioned correctly, but they are empty. This is the code used to add new charts (chart_div_? exists):
$.jqplot('chart_div_' + chartCounter, sold_plot, {
seriesColors: [ "#30D2FF", "BFFFCB", "BFFFCB", "BFFFCB" ],
seriesDefaults: {
showMarker: false,
markerOptions: {
show: false,
}
},
axes: {
xaxis: {
renderer: $.jqplot.DateAxisRenderer,
min: plot_min,
max: plot_max,
}
},
grid: {
background: '#444444',
},
});
chartCounter++;
Could it be something to do with moving a canvas? I tried redrawing it, but it did not work.

here is the example which can help you: Jsfiddle Link
HTML:
<div id="main">
<div id="chart1" style="margin-top:20px; margin-left:20px;"></div>
</div>
Click Here Trigger
Javascript:
$(document).ready(function () {
$.jqplot.config.enablePlugins = true;
var chartData = [
["19-Jan-2012", 2.61],
["20-Jan-2012", 5.00],
["21-Jan-2012", 6.00]
];
var cnt = 1;
// add a custom tick formatter, so that you don't have to include the entire date renderer library.
$.jqplot.DateTickFormatter = function (format, val) {
// for some reason, format isn't being passed through properly, so just going to hard code for purpose of this jsfiddle
val = (new Date(val)).getTime();
format = '%b&nbsp%#d'
return $.jsDate.strftime(val, format);
};
function PlotChart(chartData, extraDays, elem) {
var plot2 = $.jqplot(elem, [chartData], {
title: 'Mouse Cursor Tracking',
seriesDefaults: {
renderer: $.jqplot.BarRenderer,
rendererOptions: {
barPadding: 1,
barWidth: 50
},
pointLabels: {
show: true
}
},
axes: {
xaxis: {
pad: 1,
// a factor multiplied by the data range on the axis to give the
renderer: $.jqplot.CategoryAxisRenderer,
// renderer to use to draw the axis,
tickOptions: {
formatString: '%b %#d',
formatter: $.jqplot.DateTickFormatter
}
},
yaxis: {
tickOptions: {
formatString: '$%.2f'
}
}
},
highlighter: {
sizeAdjust: 7.5
},
cursor: {
show: true
}
});
}
PlotChart(chartData, 3, "chart1");
$("a.topopup").click(function () {
loading();
return false;
});
function loading() {
var div = $("#main");
cnt = cnt + 1;
var elemId = "chart" + cnt;
div.prepend("<div id='" + elemId + "'></div>");
PlotChart(chartData, 3, elemId);
}
});

jqplot bargraph not displaying data

Not getting any errors from firebug. Not showing in any browser. Was working previously and stopped working about a week ago. Sample of the code...
$(document).ready(function () {
//Generic names for multiple graphs
var First = $('#hfFirstOrder').val().split(",");
var Second = $('#hfSecondOrder').val().split(",");
var Third = $('#hfThirdOrder').val().split(",");
var ticks = $('#hfDaysOrder').val().split(",");
var maxValue = parseInt($('#hfMaxOrder').val());
var FirstArray = [];
var SecondArray = [];
var ThirdArray = [];
for (i = 0; i < First.length; i++) {
FirstArray.push(parseInt(First[i]));
SecondArray.push(parseInt(Second[i]));
ThirdArray.push(parseInt(Third[i]));
}
plotGraph("stackedPurchase", [FirstArray, SecondArray, ThirdArray], true, ticks, "Orders", maxValue, '#000', "Completed",
'#00F', "Ship/Pick", '#F00', "Back Order");
function plotGraph(chartName, total, stackBool, tick, yLabel, maxValue, SC1, SL1, SC2, SL2, SC3, SL3) {
plot = $.jqplot(chartName, total, {
stackSeries: stackBool,
seriesDefaults: {
renderer:$.jqplot.BarRenderer,
rendererOptions: { barMargin: 20, barWidth: 10 },
showMarker: false,
pointLabels: { show: false }
},
axes: {
xaxis: {
label: "Days",
renderer: $.jqplot.CategoryAxisRenderer,
ticks: tick
},
yaxis: {
label: yLabel,
padMin: 0,
tickInterval: parseInt(maxValue * .1),
min: 0,
max: maxValue,
tickOptions: { formatString: '%d' }
}
},
series: [{ color: SC1, label: SL1 },
{ color: SC2, label: SL2 },
{ color: SC3, label: SL3 }
],
legend: {
show: true,
location: 'e',
placement: 'outside'
}
});
}
});
And then there's a call in the html for
<div id="stackedPurchase" style="height:450px;width:900px;" runat="server"></div>
And the various hidden values are csv strings from the code behind. According to firebug they are being passed in correctly (right formats and correct number of each variable). Judging from my coding experiences recently, its probably something obvious.

Got a partial answer, the first two graphs work now because someone else at work moved the folders that the jqplot stuff was in without informing me. Changing the address in the scripts at top fixed the problem.
But for some reason the third one isn't working.
plotGraph("graphQuote", [FirstArray, SecondArray, ThirdArray], false, ticks, "Quotes", maxValue, '#F00', "Request RFQ", '#00F', "RFQ", '#0F0', "Customer Quote");
SecondArray is all zero values, FirstArray is mostly zero and ThirdArray has a value in most of its fields. Ticks has correct dates.

Alright, found the problem. Apparently
parseInt(maxValue * .1)
gets pissy and returns 0 if maxValue is less than 10, and jqplot doesn't like 0 as a tick interval. Found a better way to do intervals and now everything works.