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JuanC

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JuanC last won the day on January 12 2017

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About JuanC

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  1. Mobile support

    You should be able to use jChartFX in any HTML based mobile platform, we have not tested Ionic but as long as they support plain javascript it should work. Sometimes a "wrapper" might be needed for certain web platforms, e.g. we have tested a wrapper to use jChartFX in Angular. As far as I know, Xamarin is more a native framework, we have an iOS native component as well as a beta Android component that could be used inside native platforms such as Xamarin or React Native. Regards, JuanC
  2. We are researching this issue, in the meantime, if you know your min and max are fixed you can set the major step as follows scale.getTickmarks().getMajor().setStep(10); Regards, JuanC
  3. NULL data in line chart

    There are 2 things in play in your code 1) There is a bug that will prevent you from using a field whose first value is null, we have fixed it internally so we expect to have a new build soon 2) Even with that bug fixed, our behavior to automatically use fields as values to be plotted or labels is to check the value for all the fields for the first object in the array, because of this the automatic detection will not work in your scenario. and you will have to explicitly tell us the fields you want to use, e.g. add this code before setDataSource var fieldMap; var fields = chart1.getDataSourceSettings().getFields(); fieldMap = new cfx.FieldMap(); fieldMap.setName("john smith"); fieldMap.setUsage(cfx.FieldUsage.Value); fields.add(fieldMap); fieldMap = new cfx.FieldMap(); fieldMap.setName("jane doe"); fieldMap.setUsage(cfx.FieldUsage.Value); fields.add(fieldMap); fieldMap = new cfx.FieldMap(); fieldMap.setName("paulie walnuts"); fieldMap.setUsage(cfx.FieldUsage.Value); fields.add(fieldMap); fieldMap = new cfx.FieldMap(); fieldMap.setName("Date"); fieldMap.setUsage(cfx.FieldUsage.XValue); fields.add(fieldMap); There is a workaround which should work on your bits which is to replace the value for any null field in the first object in your data array with cfx.Chart.Hidden, e.g. if your data was declared like this, you would get the expected result var items = [{ 'john smith' : cfx.Chart.Hidden, 'jane doe' : 30, 'paulie walnuts' : 50, 'Date' : '2018-03-01' }, { 'john smith' : 50, 'jane doe' : 20, 'paulie walnuts' : 10, 'Date' : '2018-03-02' }, { 'john smith' : 20, 'jane doe' : 10, 'paulie walnuts' : 60, 'Date' : '2018-03-03' }]; Regards, JuanC
  4. NULL data in line chart

    Can you post a small client side script with hardcoded data that reproduces your issue, e.g. chart1.setDataSource([{"Value":10, "Label":"January"},{"Value":12, "Label":"February"},{"Value":18, "Label":"March"}, {"Value":6, "Label":"April"}, {"Value":8, "Label":"June"},{"Value":13, "Label":"July"}, {"Value":24, "Label":"August"},{"Value":21, "Label":"September"},{"Value":19, "Label":"October"}]); Regards, JuanC
  5. Clickable Legend

    I would suggest you change your code so that chart.create is the last thing you do. The way you are doing it now, when you call chart.create we "render" the current plot (random data) and then your subsequent api calls will mark the chart as dirty so it will be repainted. This may cause some flickering on slow devices. To capture clicks, you need to use attach to the click event, note that the code is slightly different whether you are using jQuery or not. var divHolder = document.getElementById('ChartDiv');chart1.create(divHolder); if (window["jQuery"]) { $("#ChartDiv").click(doClick); } else { divHolder.onclick = doClick; } function doClick(evt) { console.log("Click on " + evt.series + " , " + evt.point); } Note that attaching to click event is one of the few things that HAS to be done after chart create is called. Also note that a click in the legend marker will generate evt.point="-1" and evt.series will hold the series index where a click on a bar/marker would set evt.point with the point index. I noticed that for now you cannot click on the legend text. We should be fixing this in a future build. Regards, JuanC
  6. Tooltip for Candle Chart

    We consider tooltips a popup window that appears when you hover over a chart point/bar. Can you describe exactly what you mean by "how to configure and display the tooltip on the top"? If possible try to include diagrams or pictures to explain what you are looking for. Regards, JuanC
  7. jChartFX can work with or without jQuery. We only interact with it to send mouse click events the "jQuery" way. We used to offer a jQueryUI plugin (jchartfx.ui.js) but this is not supported anymore. Regards, JuanC
  8. Comination Chart

    No. It is not possible to combine horizontal and vertical plots. JuanC
  9. Comination Chart

    Unfortunately it is not possible to achieve the chart you are trying to create. Regards, JuanC
  10. Comination Chart

    Unfortunately density cannot be combined with Candlestick. When I tried visiting the jsfiddle I see no chart, just some javascript code. I would suggest you try to explain with more detail how do you want to combine candlestick, annotations and density including a drawing if possible. Regards, JuanC
  11. Date(s) are 1 day behind

    Alternatively you could try something like this, I have NOT tested this code in all time zones but it should work var date = new Date(); // Round this to avoid handling fractional time zones var timeZone = Math.floor(date.getTimezoneOffset() / 60); var absTimeZone = Math.abs(timeZone); var strTimeZone = absTimeZone.toString(); if (absTimeZone < 10) strTimeZone = "0" + strTimeZone; if (timeZone > 0) strTimeZone = "-" + strTimeZone; else strTimeZone = "+" + strTimeZone; strTimeZone = "T12:00:00" + strTimeZone + ":00"; var items = [{"Value":10, "Date":"2017-11-29" + strTimeZone}, {"Value":10, "Date":"2017-12-15" + strTimeZone}] Note that the code is getting the "local" time zone offset and making sure it is a valid time zone format including leading zeros and minutes. We will research if we can support a scheme where you don't supply time and let us know through a flag that you do not care about times but the code would essentially do the same as shown here. Regards, JuanC
  12. Date(s) are 1 day behind

    This is not a format we established, it is ISO 8601 which is handled by the browser javascript implementation. For Eastern Standard Time you should use "2017-11-29T00:00:00.000-05:00" Regards, JuanC
  13. Date(s) are 1 day behind

    A date like this "2017-11-29T00:00:00.000Z" means November 29th at 12:00 am UTC (greenwich time), which means that the same date shown in an US east coast timezone will be displayed as November 28th (at 7 or 8 PM depending on daylight savings time or eastern standard time status). You could format your dates using the specific time zone instead of Z, e.g "2017-11-29T00:00:00.000-05", alternatively by supplying a time of 1PM in "2017-11-29T13:00:00.000Z" you will get a display of Nov 29 in any time zone from -13 to +9 which would probably cover most of your target audience. Regards, JuanC
  14. We support zoom in the X axis, in an empty chart try this code chart1.getData().setSeries(1); chart1.getData().setPoints(50); chart1.getAxisX().setAutoScroll(true); chart1.getAxisX().setClientScroll(true); Currently, we do not have built-in support for a feature where the user would select a rectangle to zoom into that area. Regards, JuanC
  15. Shows the Text property of the Point object.

    Normally, the labels are provided along with the data, e.g. chart1.setGallery(cfx.Gallery.Pyramid); chart1.setDataSource([{"Value":10, "Product":"ABC"}, {"Value":18, "Product":"DEF"}, {"Value":6, "Product":"GHI"}]); var pointLabels = chart1.getAllSeries().getPointLabels(); pointLabels.setVisible(true); pointLabels.setFormat("%l"); Note that to show the label you should use lowercase L in the format. Regards, JuanC
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