Unplanned
Last Updated: 12 Oct 2021 15:58 by ADMIN
Created by: Bob
Comments: 0
Category: HtmlChart
Type: Bug Report
1

The charts starts to perform zooming when the user pans with one finger in touch devices.

Steps to reproduce:

1. Open the following demo in a touch device (or Chrome simulator)

    https://demos.telerik.com/aspnet-ajax/htmlchart/examples/functionality/pan-zoom/defaultcs.aspx

2. Start panning until the zooming issue occurs

 

Video: http://somup.com/cr6lo73b73 

Completed
Last Updated: 14 Sep 2021 10:17 by ADMIN
Release Q1 2015
Created by: Sean
Comments: 0
Category: HtmlChart
Type: Bug Report
0
I have a stacked bar RadHtmlChart that is created programmatically in the code behind.
When I create the chart, and set the width to Unit.Pixel(1500), it works fine, as shown in Working.png. However, when I change the value to Unit.Percentage(90), the chart is not rendered properly at all.

Any fixes/workarounds for this?

Seán


For the time being you must set percentage to the chart's wrapper. For example:
CSS:
	<style type="text/css">
		html, body, form {
			padding: 0;
			margin: 0;
			height: 100%;
			overflow: hidden;
		}

		.myChart {
			width: 100% !important;
			height: 100% !important;
		}
	</style>
ASPX:
		<div style="width: 30%; height: 40%; border: 1px solid green;">
			<telerik:RadHtmlChart runat="server" ID="RadHtmlChart1" CssClass="myChart" Width="600px" Height="400px">
				<PlotArea>
					<Series>
						<telerik:ColumnSeries Name="Product 1">
							<SeriesItems>
								<telerik:CategorySeriesItem Y="15000" />
								<telerik:CategorySeriesItem Y="23000" />
								<telerik:CategorySeriesItem Y="10000" />
							</SeriesItems>
						</telerik:ColumnSeries>
					</Series>
					<XAxis>
						<Items>
							<telerik:AxisItem LabelText="1" />
							<telerik:AxisItem LabelText="2" />
							<telerik:AxisItem LabelText="3" />
						</Items>
					</XAxis>
				</PlotArea>
				<ChartTitle Text="Product sales for 2011">
				</ChartTitle>
				<Legend>
					<Appearance Position="Bottom" />
				</Legend>
			</telerik:RadHtmlChart>
		</div>
Completed
Last Updated: 13 Sep 2021 17:04 by ADMIN
Created by: A
Comments: 1
Category: HtmlChart
Type: Bug Report
1

Problem appers with x-axis if you try to zoom. 

Chart without zoom: https://drive.google.com/file/d/1Nem_NctJN5WtzypS8JgZTtIuAARGFQbd/view?usp=sharing

Chart with some zoom: https://drive.google.com/file/d/1TRJZX3FI52YXyuWgB_kpkMTWWXKecVC_/view?usp=sharing

Project included.

Completed
Last Updated: 10 Aug 2021 15:24 by ADMIN
ADMIN
Created by: Danail Vasilev
Comments: 1
Category: HtmlChart
Type: Bug Report
0
For the time being you can resize the chart with set_width/set_height methods. For example:

<head runat="server">
	<title></title>
	<style>
		.RadHtmlChart.k-chart, table {
			width: 100%;
			height: 100%;
		}

		td {
			border: 1px solid green;
			width: 60%;
			height: 60%;
			overflow:hidden;
		}

		html, body, form {
			height: 100%;
			overflow: hidden;
			margin: 0;
		}
	</style>
</head>
<body>
	<form id="form1" runat="server">
		<telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>
		<script>
			function resizedw() {
				// Haven't resized in 100ms!
				var donut = $find("<%=DonutChart.ClientID%>");
				var radar = $find("<%=RadarAreaChart.ClientID%>");

				var docDimensions = $telerik.getBounds(document.body);
				resizeChart(donut, docDimensions);
				resizeChart(radar, docDimensions);
			}

			function resizeChart(chart, docDimensions) {
				var chartDimensions = $telerik.getBounds(chart.get_element().parentElement);
				chart.set_width("'" + (chartDimensions.width / docDimensions.width) + "%'");
				chart.set_height(("'" + chartDimensions.height / docDimensions.height) + "'%");
			}

			var doit;
			window.onresize = function () {
				clearTimeout(doit);
				doit = setTimeout(resizedw, 1000);
			};
		</script>
		<table>
			<tr>
				<td>
					<telerik:RadHtmlChart runat="server" ID="DonutChart" Width="100%" Height="100%" Transitions="true">
						<Appearance>
							<FillStyle BackgroundColor="White"></FillStyle>
						</Appearance>
						<ChartTitle Text="OS Usage Statistics for December 2012">
							<Appearance Align="Center" Position="Top"></Appearance>
						</ChartTitle>
						<PlotArea>
							<Series>
								<telerik:DonutSeries>
									<LabelsAppearance Visible="false">
									</LabelsAppearance>
									<TooltipsAppearance DataFormatString="{0}%" BackgroundColor="White"></TooltipsAppearance>
									<SeriesItems>
										<telerik:PieSeriesItem BackgroundColor="#00adcc" Name="Win7"
											Y="55.6"></telerik:PieSeriesItem>
										<telerik:PieSeriesItem BackgroundColor="#cccccc" Name="Win8" Y="2.5"></telerik:PieSeriesItem>
										<telerik:PieSeriesItem BackgroundColor="#999999" Name="Vista" Y="2.8"></telerik:PieSeriesItem>
										<telerik:PieSeriesItem BackgroundColor="#888888" Name="NT" Y="1.8"></telerik:PieSeriesItem>
										<telerik:PieSeriesItem BackgroundColor="#777777" Name="WinXP" Y="21.1"></telerik:PieSeriesItem>
										<telerik:PieSeriesItem BackgroundColor="#666666" Name="Linux" Y="4.7"></telerik:PieSeriesItem>
										<telerik:PieSeriesItem BackgroundColor="#555555" Name="Mac" Y="8.7"></telerik:PieSeriesItem>
										<telerik:PieSeriesItem BackgroundColor="#444444" Name="Mobile" Y="2.2"></telerik:PieSeriesItem>
									</SeriesItems>
								</telerik:DonutSeries>
							</Series>
						</PlotArea>
					</telerik:RadHtmlChart>
				</td>
				<td>
					<telerik:RadHtmlChart runat="server" ID="RadarAreaChart" Width="100%" Height="100%" Transitions="true">
						<PlotArea>
							<Series>
								<telerik:RadarAreaSeries Name="Position" MissingValues="Gap">
									<Appearance>
										<FillStyle BackgroundColor="#00adcc"></FillStyle>
									</Appearance>
									<LineAppearance Width="1" />
									<MarkersAppearance Visible="false" />
									<LabelsAppearance Visible="false"></LabelsAppearance>
									<SeriesItems>
										<telerik:CategorySeriesItem Y="159"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="170"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="100"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="140"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="160"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="103"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="173"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="107"></telerik:CategorySeriesItem>
									</SeriesItems>
								</telerik:RadarAreaSeries>
								<telerik:RadarAreaSeries Name="Person" MissingValues="Gap">
									<Appearance>
										<FillStyle BackgroundColor="red"></FillStyle>
									</Appearance>
									<LabelsAppearance Visible="false">
									</LabelsAppearance>
									<LineAppearance Width="1" />
									<MarkersAppearance Visible="false"></MarkersAppearance>
									<SeriesItems>
										<telerik:CategorySeriesItem Y="130"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="160"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="130"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="168"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="150"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="140"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="109"></telerik:CategorySeriesItem>
										<telerik:CategorySeriesItem Y="76"></telerik:CategorySeriesItem>
									</SeriesItems>
								</telerik:RadarAreaSeries>
							</Series>
							<XAxis Color="Black" Reversed="false" StartAngle="180">
								<MajorGridLines Color="#EFEFEF" Width="1"></MajorGridLines>
								<MinorGridLines Visible="false"></MinorGridLines>
								<Items>
									<telerik:AxisItem LabelText="Soft Skills"></telerik:AxisItem>
									<telerik:AxisItem LabelText="Sector knowledge"></telerik:AxisItem>
									<telerik:AxisItem LabelText="Finance knowledge"></telerik:AxisItem>
									<telerik:AxisItem LabelText="Work experience"></telerik:AxisItem>
									<telerik:AxisItem LabelText="Win7 skills"></telerik:AxisItem>
									<telerik:AxisItem LabelText="MS Office skills"></telerik:AxisItem>
									<telerik:AxisItem LabelText="Programming skills"></telerik:AxisItem>
									<telerik:AxisItem LabelText="Database skills"></telerik:AxisItem>
								</Items>
							</XAxis>
							<YAxis Visible="false">
								<MajorGridLines Color="#EFEFEF" Width="1"></MajorGridLines>
								<MinorGridLines Visible="false"></MinorGridLines>
								<LabelsAppearance Step="1"></LabelsAppearance>
							</YAxis>
							<CommonTooltipsAppearance Color="White"></CommonTooltipsAppearance>
						</PlotArea>
						<ChartTitle Text="Position Profile">
							<Appearance Align="Center" BackgroundColor="White" Position="Top">
							</Appearance>
						</ChartTitle>
						<Legend>
							<Appearance BackgroundColor="White" Position="Bottom">
							</Appearance>
						</Legend>
					</telerik:RadHtmlChart>
				</td>
			</tr>
		</table>
	</form>
Completed
Last Updated: 10 Aug 2021 15:24 by ADMIN
For the time being you can use the following workaround:

        <telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>
        <script>
            function pageLoad() {
                var position = 'insideEnd'; // 'center'
                $find("<%=PieChart1.ClientID%>")._chartObject.options.series[0].labels.position = position;
                $find("<%=PieChart1.ClientID%>")._chartObject.options.series[0].labels.distance = -20;
                $find("<%=PieChart1.ClientID%>")._chartObject.redraw();
            }
        </script>
        <telerik:RadHtmlChart runat="server" ID="PieChart1" Transitions="true">
            <PlotArea>
                <Series>
                    <telerik:PieSeries StartAngle="90">
                        <LabelsAppearance DataFormatString="{0} %" />
                        <TooltipsAppearance DataFormatString="{0} %" />
                        <Items>
                            <telerik:SeriesItem BackgroundColor="Purple" Exploded="true" Name="Internet Explorer" YValue="18.3" />
                            <telerik:SeriesItem BackgroundColor="Orange" Exploded="false" Name="Firefox" YValue="35.8" />
                            <telerik:SeriesItem BackgroundColor="Green" Exploded="false" Name="Chrome" YValue="38.3" />
                            <telerik:SeriesItem BackgroundColor="Blue" Exploded="false" Name="Safari" YValue="4.5" />
                            <telerik:SeriesItem BackgroundColor="Red" Exploded="false" Name="Opera" YValue="2.3" />
                        </Items>
                    </telerik:PieSeries>
                </Series>
            </PlotArea>
            <ChartTitle Text="Browser Usage for April 2012">
            </ChartTitle>
        </telerik:RadHtmlChart>
        <script>
            var INSIDE_END = "insideEnd",
                CENTER = "center",
                LEFT = "left",
                RIGHT = "right",
                dataviz = kendo.dataviz,
                Box2D = dataviz.Box2D,
                math = Math;

            kendo.dataviz.PieSegment.fn.reflowLabel = function () {
                var segment = this,
                    sector = segment.sector.clone(),
                    options = segment.options,
                    label = segment.label,
                    labelsOptions = options.labels,
                    labelsDistance = labelsOptions.distance,
                    angle = sector.middle(),
                    lp, x1, labelWidth, labelHeight;

                if (label) {
                    labelHeight = label.box.height();
                    labelWidth = label.box.width();
                    if (labelsOptions.position == CENTER) {
                        sector.r = math.abs((sector.r - labelHeight) / 2) + labelHeight + labelsDistance;
                        lp = sector.point(angle);
                        label.reflow(Box2D(lp.x, lp.y - labelHeight / 2, lp.x, lp.y));
                    } else if (labelsOptions.position == INSIDE_END) {
                        sector.r = sector.r - labelHeight / 2 + labelsDistance;
                        lp = sector.point(angle);
                        label.reflow(Box2D(lp.x, lp.y - labelHeight / 2, lp.x, lp.y));
                    } else {
                        lp = sector.clone().expand(labelsDistance).point(angle);
                        if (lp.x >= sector.c.x) {
                            x1 = lp.x + labelWidth;
                            label.orientation = RIGHT;
                        } else {
                            x1 = lp.x - labelWidth;
                            label.orientation = LEFT;
                        }
                        label.reflow(Box2D(x1, lp.y - labelHeight, lp.x, lp.y));
                    }
                }
            }
        </script>
Completed
Last Updated: 15 Jun 2021 14:11 by ADMIN
Created by: Kasper
Comments: 1
Category: HtmlChart
Type: Feature Request
1
I would like to suggest ability to display data series in doughnut and pie charts, see attached example from Excel.

And thanks for a great Telerik experience, you make my development work very easy.
Unplanned
Last Updated: 15 Jun 2021 12:36 by ADMIN
Currently labels for SeriesItems having Y of 0 are not displayed in PieSeries and DonutSeries due to visual considerations. Improve the handling of such labels.
Completed
Last Updated: 14 Jun 2021 10:36 by ADMIN
ADMIN
Created by: Danail Vasilev
Comments: 2
Category: HtmlChart
Type: Feature Request
1
A visual example - http://i.stack.imgur.com/zRwlo.jpg

The feature will be useful for projects that need 508 compliance.

A boolean properties will also be useful: "EnabledTexturedFill", "EnableColorAndTexturedFill"
Unplanned
Last Updated: 14 Jun 2021 08:06 by ADMIN
Created by: Scott
Comments: 1
Category: HtmlChart
Type: Feature Request
1

Label position dynamic. I'm currently using "InsideBase", but if those values are so small it's not very visible, so i'd like place those on the outside end.

Completed
Last Updated: 11 Jun 2021 12:01 by ADMIN
Created by: Phil
Comments: 4
Category: HtmlChart
Type: Bug Report
2
When you do a stacked HTMLChart (e.g. columns), the legend appears in the opposite order to the data series being stacked, which looks very unprofessional.
Declined
Last Updated: 11 Jun 2021 11:54 by ADMIN
Created by: matt
Comments: 3
Category: HtmlChart
Type: Feature Request
0
Hello,

The RadHtmlCharts are great! One that is missing however -- a spectrum chart, aka a spectral chart. This takes in a set of data points and renders the values as color-dense shadings. Screenshot attached of one we made ourselves.

This would be useful for scientific applications.


thanks,
matt
Declined
Last Updated: 11 Jun 2021 11:45 by ADMIN
Created by: Frank
Comments: 1
Category: HtmlChart
Type: Feature Request
0
Was hoping for the functionality where the difference area between lines could be colored accordingly.

example: htmlchart with 3 lines 1:+standard 2:-standard and 3:Actual value. If the Actual value line is below the -standard, the difference area should be colored red. In case it crosses the +standard it should be green.

Likely the Actual value line would be an Area-serie but that aside.
Declined
Last Updated: 11 Jun 2021 10:58 by ADMIN
Created by: Tom
Comments: 1
Category: HtmlChart
Type: Feature Request
3
It would be great to be able to specify more layout properties via the data bound data. For example, if we could bind a property in the data to a series type we could generate different series on the fly.

This is important to me as I want to make the page as responsive as possible, so all charts load on demand - but as the data is generated in an asynchronous fashion, I'm not able to predetermine how many series I can create.
Completed
Last Updated: 11 Jun 2021 10:33 by ADMIN
Currently when numerous series items are present, numerical series (Scatter/ScatterLine) calculates automatically the step through which the major/minor gridlines and the corresponding xaxis labels are rendered, so that they are visually readable.

For categorical charts, however, when multiple series items are present, all the xaxis labels are plotted, so that they are not readable. Add ability to autoadjust the step for the xaxis labels in categorical charts.
Declined
Last Updated: 11 Jun 2021 10:02 by ADMIN
Created by: Vermaak
Comments: 1
Category: HtmlChart
Type: Feature Request
0
A couple of suggestions in one...

Please add interactivity between RadPivotGrid and HTMLChart similar to pivot charts in MS Excel - making the filters and selections. update both the chart and the pivot table.  It will also be helpful if you can add splicers similar to PowerPivot.

When you click on the chart, it opens a popup menu, relative to that area - where you can select to filter that axis or value in a series, change the aggregate calculation for that value (sum, count, average, etc.), change date ranges on a date axis - like, date range picker, by year, fiscal, quarter, week, etc. 

Thanks,

Vermaak
Unplanned
Last Updated: 11 Jun 2021 09:22 by ADMIN
ADMIN
Created by: Danail Vasilev
Comments: 2
Category: HtmlChart
Type: Feature Request
6
Currently tooltips expose properties for changing the background color, format and visibility. Add more appearance options like color (Color property is already exposed), font, border width, border color and padding. For the time being the following workaround can be used:
	<style type="text/css">
		.k-tooltip
		{
			/*Sets border width and color*/
			border-width: 5px !important;
			border-color: Green !important;
			/*Sets padding*/
			padding-left: 5px !important;
			padding-right: 5px !important;
			/*Sets FontSize, FontFamily and color*/
			font: 15px Arial,Helvetica,sans-serif !important;
			color: Red !important;
		}
	</style>
Unplanned
Last Updated: 11 Jun 2021 08:21 by ADMIN
I get a lot of work creating BI/KPI UIs which are basically converting what you can do in Excel Charts into a Web UI.   Which means anything they can do in Excel they expect the web to do. 
Since there is a drive to automate as much mundane human activity in the business and reduce human error (cut and paste error). 
I need to reproduce a graph with 'standard' Tend Lines. 
That is not my interpretation of a trend, but standard best practice.
I want this as a checkbox, and attribute to a series for the DataFieldY value.
Initially a code solution would be fine (once its got the data from the data source).

http://www.telerik.com/blogs/how-to-plot-a-simple-linear-regression-in-telerik-asp.net-web-form-chart
 
Completed
Last Updated: 10 Jun 2021 18:30 by ADMIN
ADMIN
Created by: Danail Vasilev
Comments: 1
Category: HtmlChart
Type: Feature Request
1
The chart's labels also look misaligned in rtl direction, so you can change only chart's direction to ltr with CSS:
	<style>
		.RadHtmlChart {
			direction: ltr;
		}
	</style>

		<div dir="rtl">
			some text
		<telerik:RadHtmlChart ID="RadHtmlChart1" runat="server" Width="600" Height="400">
			<PlotArea>
				<Series>
					<telerik:ColumnSeries Name="Series 1">
						<SeriesItems>
							<telerik:CategorySeriesItem Y="30" />
							<telerik:CategorySeriesItem Y="10" />
							<telerik:CategorySeriesItem Y="20" />
						</SeriesItems>
					</telerik:ColumnSeries>
				</Series>
				<XAxis>
					<LabelsAppearance RotationAngle="33"></LabelsAppearance>
					<Items>
						<telerik:AxisItem LabelText="Item 1" />
						<telerik:AxisItem LabelText="Item 2" />
						<telerik:AxisItem LabelText="Item 3" />
					</Items>
				</XAxis>
			</PlotArea>
		</telerik:RadHtmlChart>
		</div>
Unplanned
Last Updated: 28 May 2021 17:46 by ADMIN
Created by: Doug
Comments: 0
Category: HtmlChart
Type: Feature Request
0
When migrating from a GeckoBoard.com dashboard, I have a Area Chart where the values over the target are one colour and those below another colour, this is true of Area and Bar charts. At the moment  I can use the "'ColorField="ErrorsColor"> " to colour the whole column to a given colour, but not that part above its Target.
One approach could be is to have 2 plots one below the target and one above the target, I would prefer to be this in control of the HtmlChart and for me not to frig it.
Thanks
Declined
Last Updated: 28 May 2021 14:49 by ADMIN
Created by: Douw
Comments: 1
Category: HtmlChart
Type: Feature Request
2
Hello,
Like a lot of companies we have multiple client side interfaces of a single application and have to create similar UI in multiple platforms.
For example I had to create a chart in both WPF and ASP.NET AJAX today.
The problem I have with the Telerik controls is that there are absolutely no standardization or consistency between platforms.
Why would a Cartesian Axis in WPF and ASP.NET AJAX and ASP MVC and Windows Universal Apps not all called the same thing?
It would be very simple to use interfaces to create some consistency between platforms.
Even better would be if Model Views are shared across platforms in a portable library: 
https://msdn.microsoft.com/en-us/library/hh563947(v=vs.110).aspx
https://msdn.microsoft.com/en-us/library/gg597391(v=vs.110).aspx
Regards,
Douw
1 2 3 4 5 6