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1 answer
518 views

hi Kendo UI team,

here is the description of my problem.

Requirement : I need to plot Trendline and Standard deviation lines on a Scatter Chart. 

Problems : 

I tried to achieve this using kendo.draw.Path to draw Trendline and SD lines

But the problem is

  1. kendo.draw.Path considers whole canvas as the plottable area with top-left corner as origin (0,0)
  2. Scatter chart has origin at left-bottom with some margin based on axis labels
  3. I could not figure out the mapping between chart coordinates & path coordinates 

Questions:

  1. How to get the boundaries of Chart Area in coordinates?
  2. How to get mapping between Charts data points and Path w.r.t. coordinates? i.e. the x,y coordinates of  the data (1023, 3250) is (150, 320)

The data for Scatter Chart varies from decimal points to 1000s (on both the axes) based on the user selection. Hence knowing the mapping between the actual coordinates and the data points only solves the problem.

 

thanks,

Srinivas

 

Viktor Tachev
Telerik team
 answered on 21 May 2020
7 answers
195 views

Hi and happy new year!

 

I have strange behaviour on my gantt datasource occurring when read request returns error 500. (i am stuck with specific endpoint which returns 500 instead of 404 when requested item is not found).

- I instantiate gantt widget and set all required options and datasource(s).
- Under read request specific project id is passed to the server. 
- Server responds with 500 and I catch it with error: function (e) {
return myErrorHandler(e, $scope); }, //Handler basically reads error and displays adequate message
- Gantt is rendered but it is empty as expected.

- I use my project selector and chose another ID that 100% exists. 
- I reset my datasource using new ID and use gantt.setDataSource to update gantt.
- Data is read from the server, no error.
- Schema: Parse is completed successfully with data. But no dataBound or anything else happens after and widget gets stuck on loading spinning wheel and doesn't populate data.

If first step is performed with correct ID (no error) widget is rendered correctly and then second step (opening other project) is working perfectly fine.

I tried with sync, refresh, read afterwards on the widget, but no success. I tried commenting out error handling implemented, but also no success.

I suspect error caught does something specific to the datasource and/or widget, but I cannot figured it out.

Any help/suggestion is more than welcome.

Thank you and regards,

Vedad

Petar
Telerik team
 answered on 20 May 2020
1 answer
1.0K+ views

Hello, I am going to build a dashboard and am thinking about using a listview(or multiple) to house widgets/partial views.  I will store the users config in the db so I would like to fetch that and load the widgets dynamically into a kendo listview.  Is that possible?  Any code samples out there?  Is there a better way to do this.  Just trying not to code it all manually and trying to take advantage of drag and drop, sorting/etc...

 

Thanks

Alex Hajigeorgieva
Telerik team
 answered on 20 May 2020
6 answers
119 views
I have data that returns a date as a string in the format of yyyymmdd (e.g. 20200112). I need to display this on the X axis of a kendo line chart as yyyy-mm-dd (2020-01-12). How would I do that? I tried in the model but got various parse errors. 
Vessy
Telerik team
 answered on 20 May 2020
2 answers
149 views

We are evaluating the Kendo UI Component for product, and have a requirement to display the MultiViewCalendar control with month range selection

Based on the documentation tried with the following option and I am unable to select the range of the month

Dojo link 

<div id="multiViewCalendar"></div>
<script>
    $("#multiViewCalendar").kendoMultiViewCalendar({
        views: 1,
        start: "year",
        depth: "year",
        selectable: "range"       
    });
</script>

 

Could you please help me on this?

VIJAY
Top achievements
Rank 1
 answered on 19 May 2020
1 answer
828 views

     Hi Telerik,

 

Can I set default Sort and Paging in FileManager?
I was try with code but It's not working:

 

<!DOCTYPE html>
<html>
<head>
    <style>
        html {
            font-size: 14px;
            font-family: Arial, Helvetica, sans-serif;
        }
    </style>
    <title></title>
    <script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
</head>
<body>
    <div id="example">
        <div id="filemanager"></div>
 
        <script>
            $("#filemanager").kendoFileManager({
                initialView: 'grid',
                views: {
                    grid: {
                        // kendoGrid options
                        pageable: {
                            pageSize: 2
                        }
                    }
                },
                dataSource: {
                    schema: kendo.data.schemas.filemanager,
                    sort: {
                        field: 'createdUtc',
                        dir: 'desc'
                    }, // => not working
                    transport: {
                        read: {
                            url: "/kendo-ui/service/FileManager/Read",
                            method: "POST"
                        },
                        create: {
                            url: "/kendo-ui/service/FileManager/Create",
                            method: "POST"
                        },
                        update: {
                            url: "/kendo-ui/service/FileManager/Update",
                            method: "POST"
                        },
                        destroy: {
                            url: "/kendo-ui/service/FileManager/Destroy",
                            method: "POST"
                        }
                    },
                    pageSize: 2,
                    //serverPaging: true,
                },
                uploadUrl: "/kendo-ui/service/FileManager/Upload",
                toolbar: {
                    items: [{
                            name: "createFolder"
                        },
                        {
                            name: "upload"
                        },
                        //{ name: "sortDirection" },
                        //{ name: "sortField" },
                        {
                            name: "changeView"
                        },
                        {
                            name: "spacer"
                        },
                        {
                            name: "details"
                        },
                        {
                            name: "search"
                        }
                    ]
                },
                contextMenu: {
                    items: [{
                            name: "rename"
                        },
                        {
                            name: "delete"
                        }
                    ]
                },
                draggable: true,
                resizable: true
            });
 
            $(document).ready(function () {
                var filemanager = $("#filemanager").getKendoFileManager();
 
                filemanager.executeCommand({
                    command: "TogglePaneCommand",
                    options: {
                        type: "preview"
                    }
                });
                filemanager.toolbar.fileManagerDetailsToggle.switchInstance.toggle();
            })
        </script>
    </div>
</body>
</html>
Aleksandar
Telerik team
 answered on 19 May 2020
4 answers
877 views

I am seeing an issue with tables that seems to be related to HTML that is loaded into the editor from another source, and I hope you can clarify if this is how it should work, or if I need to process the HTML in some way.

The steps to recreate this issue are as follows:

1. Create some html outside of Kendo with a table that has styling (borders, backgrounds, etc., we are using the RadRichTextBox WPF editor).

2. Load this html into the Kendo editor.

3. In the Kendo editor, add a new table below the original table by selecting the grid control and dragging to get the rows/columns desired.

At the point the new table is added, the original table loses all styling (see attached images).

After investigating this issue, I found that there is a class associated to a table when the table is created within the Kendo editor.  The class is "k-table".  When this class is not present from html outside of the editor, the issue seems to be happening.  Also, I noticed that if I create the second table using the Table Wizard button at the bottom of the grid control, the styling is not removed from the first table.  Only when using the grid drag does it happen.

Is this something that you can fix, or are we required to insert the k-table class to get around this issue?

Thanks for your help, and let me know if you need more information.

Ivan Danchev
Telerik team
 answered on 19 May 2020
1 answer
319 views

Fiddle: https://jsfiddle.net/avnsri4986/e7nfrj9h/3/

 

Stack Trace: 

Uncaught SyntaxError: Unexpected number
    at Function (<anonymous>)
    at getter (kendo.all.js:2127)
    at Object.<anonymous> (kendo.all.js:6550)
    at each (jquery.min.js:2)
    at new init (kendo.all.js:6537)
    at new init (kendo.all.js:6888)
    at Function.de.create (kendo.all.js:9179)
    at init._dataSource (kendo.all.js:67457)
    at new init (kendo.all.js:63291)
    at HTMLDivElement.<anonymous> (kendo.all.js:2517)
Silviya Stoyanova
Telerik team
 answered on 19 May 2020
2 answers
630 views

I'm looking to add custom rules to a masked textbox and there is not enough documentation or examples to explain how this works properly.

 

$(this).kendoMaskedTextBox({

    mask: "mm/dd",

rules: {

mm: "any number between 01 - 12",

dd: "any number between 01 - 31"}})

 

I attempted to use a masked date picker, but it still allows for entries like "48/99" which is incorrect.

 

Is it possible to do something like this using custom rules and regex?

 

Nikolay
Telerik team
 answered on 19 May 2020
10 answers
249 views
I have kendo grid  and have paging options which is working as expected and issue is when i click on Page 2 some again page 2 is showing . Is there any possiblity to hide that . Please refer to attachment it should be very clear. 
Tsvetomir
Telerik team
 answered on 19 May 2020
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