creating different color spans using REST api - google-cloud-trace

I've seen some trace screenshots where different spans have different colors (https://rakyll.org/grpc-trace/).
I've tried tracing my code using the v2 rest api, and all of the resulting spans are in uniform shades of blue.
How are these colors determined? I don't see an explicit color attribute in v2 rest api. Is color inferred from some other attribute?
Is it an old feature that was abandoned?

Currently, there is no way to set colors; we only have spans in blue color. The colors in the article are old screenshots from a previous version of the UI. We used to have them in different colors based on whether they were the root span.
We have considered different coloring options at various times, but there are no actual plans around this. If you are still interested in this feature, you can create a feature request using the following Issue Trackers.

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Telerik Reporting Chart

I am trying to build report using Telerik report designer and not able to identify if charts in below format are supported, if supported which chart type we have to use and which property will fill in color between low and high
candlestick , range chart only displays lines (2nd image)
For the candlestick, it looks like a configuration issue. Please, check these things:
High, Low, Open, Close are not properly set
The data source fields that are used are not of numeric type (i.e. hold numerics as strings)
As for coloring the candlestick, check DataPointStyle property. there you can either set BackgroundColor directly, or use DataPointConditionalFormatting in order to add dynamic formatting based on the underlying data.
I am not sure what is the chart in the first picture, can you please shed some more light on its purpose?

Highlight buildings in a map

I have a requirement where I need to highlight the buildings around my current location on a map. I am using Xamarin and was wondering if anyone can point me to a correct library or control that can fulfill my requirement.
I am currently using Mapsui for Xamarin but I don't think it has the feature I am looking for.
If you have access to the geometries of the buildings there are many ways you could implement highlighting.
One way that comes to mind. Create a layer on top of your background layer with the same geometries as data source. Use a ThemeStyle to show only the selected geometry. The ThemeStyle class is created with a callback method which determines the style. In that method you should return no style unless the feature id is the same as selected feature id.
You can take a look at the ThemeStyle sample for a more general use of themes (no highlighting).
Also you could look at Mapsui.Sample.Wpf.Editing. Here is a screenshot of that sample:

What are the jqplot default series colors?

I'm plotting some data on a jqPlot pie chart, and would like to get at the slice colors.
I'm aware of the possibility to set the slices to colors I set myself. I want to avoid this because the default colors contrast nicely from one to the next slice. Also, the slices highlight on mouse-over, and these highlight-colors are also good looking in the whole. It seems too much work to create a whole new color-scheme and then apply it to the plot when jqPlot already has a good thing built in.
I want to get at the slice colors, because I need to give additional information on certain slices, and will do this outside the plot. Re-using the slice colors would additionally allow me to forego using a legend in the plot itself, and creating my own table with "slice color - name - additional information" which then serves both as legend and source of additional information.
Is there a source of the default colors somewhere? Or is there a way to programmatically extract them?
Ok, managed to find it by delving in the actual code, as the info in the documentation on the website of jqPlot is out of date on this.
For other people wanting to get the default colors:
jquery.jqplot.js, line 354: defaultColors: [ "#4bb2c5", "#EAA228", "#c5b47f", "#579575", "#839557", "#958c12", "#953579", "#4b5de4", "#d8b83f", "#ff5800", "#0085cc", "#c747a3", "#cddf54", "#FBD178", "#26B4E3", "#bd70c7"]
jquery.jqplot.js, line 355: defaultNegativeColors: [ "#498991", "#C08840", "#9F9274", "#546D61", "#646C4A", "#6F6621", "#6E3F5F", "#4F64B0", "#A89050", "#C45923", "#187399", "#945381", "#959E5C", "#C7AF7B", "#478396", "#907294"]
The highlight colors are generated automatically in the function $.jqplot.computeHighlightColors (line 3775 of jquery.jqplot.js). I haven't deduced the actual highlight colors as I don't need them for my purposes, but if anyone else is looking for them, that's where you can start from.
(Line numbers based on version 1.0.8, revision 1250.)
As far as I can tell & also according to the documentation, when the array is exhausted, the colors starts over from the beginning.
According to Gimp colorpicker, jqPlot default series colors used in this example are - clockwise from orange to blue :
#eaa228 - (#efbc67 if highlighted),
#c5b47f - (#d5c9a4 if highlighted),
#579575 - (#88b39d if highlighted),
#839557 - (#a7b388 if highlighted),
#958c12 - (#b3ad58 if highlighted),
#4bb2c5 - (#80c8d5 if highlighted).
Hope it will help you.
EDIT : Please see in this link default series colors specified by jqplot

Set a country background to my Google Geomap

A few days ago I've explored geomaps and, however, it turned out to be easy to change the properties of the elements.
But I have two questions:
I'd like to add rivers and forests on the maps. So Ive considered to set a background image instead of the geomaps figure. But I can't find a way to get this one fixed. Is there a way to set a background picture for a country or region?
How can I change the shape of the "bubbles" when you select a city e.g. "London"? I'd like to change it to a square.
Thanks in advance for your help!
Unfortunately what you're looking for is not available in geocharts in their current implementation.
Using a background image is possible in the sense that you can use CSS to make all shapes in the map transparent, and use a background image in the div to make it appear as if the little circles are being drawn on a map with forest and rivers, but you will run in to two big hurdles:
Your map will need to be identical in size/layout to the Google Maps SVG
If Google ever changes the SVG they use (or the view/projection they use) you will need to edit yours too
This isn't ideal, obviously. You could work around it by creating custom javascript to write rivers and forests on your map, but that is going to be a huge headache (especially if you are using multiple maps/views).
As for the circles, you can't change them to squares without hacking the actual SVG in the background with javascript. While this is definitely possible (if you're really good with SVG/Javascript), it again isn't using any of the fancy features of geocharts, and is more just a custom solution that will have to be updated if/when google updates their API.
Rather than doing it that way, you may want to look in to the same implementation on google maps itself. That will allow you to use custom markers, draw custom shapes, etc. with a lot more flexibility (and a much more stable API).

Windows 8 Metro Style Horizontal design

I would like to ask which controls can be used to create a design similar to the built-in Weather app - that means different sets of data (tables, lists, etc.) that stretch horizontally and can be scrolled and can use the semantic zoom (which just shows the names of individual sections). I was trying to find some ways, but I have always found only examples using a list of same-type items, that are grouped somehow and shown in a GridView, but nothing similar to those built-in apps.
Thank you very, very much
You can achieve your goal using ItemTemplateSelector.
See here for more information: http://msdn.microsoft.com/en-us/library/system.windows.controls.itemscontrol.itemtemplateselector.aspx

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