I have a bunch of data that I'm putting into a scatter plot, but the default color ordering is "blue", "lighter blue", and then finally "orange". My data comes in two groups, with constant group names, and no mater what I do, they're always the blue and lighter blue. Which does NOT make for a good visualization.
So far, I haven't found a way to modify the color ordering, or to set specific colors for the known groups. I also haven't been able to change the colors by adding a dummy group (of one element) and playing with the ordering in the SQL statement.
Any help?
Here's a workaround/hack for that missing Zeppelin feature.
Charting in Zeppelin is based on nvd3 (which in turn uses the D3 library). As Zeppelin simply doesn't care about colors yet, it'll always use the nvd3 default, which is defined in the utils.js function nv.utils.defaultColor.
So, to change the color scheme, you can simply override this function. Try out the following JavaScript code in your browser's console. For available color schemes, see the API documentation (note, that Zeppelin still uses the old 3.x version of D3).
nv.utils.defaultColor = function() {
return nv.utils.getColor(d3.scale.category10().range());
}
The remaining problem is, how to permanently add this to your Zeppelin instance, which depends on your environment. It is sufficient to add the above code to the end of your index.html, however this involves modifying the zeppelin-web-x.y.z.war file.
In the end, with above code, you get something like this.
Related
I have a map with a couple of dozen of different "categories" of polygons and would like to symbolize them using the "Categorized" symbolization in QGIS. Every category already has its color defined in a "fill_color" attribute within the table.
I would like the symbolization to honor that color definition instead of assigning some color of its own to the categories.
Is there a way to do this, without manually going through every category and changing its color?
I'm not a Python programmer, so if there is a possibility of programming this, it's beyond me.
The software itself does not offer the option to do what I need in "Categorized" symbolization, although you can do it in "Single Symbol". If you try it in "Categorized" it will let you do the same steps, but the program will nevertheless use colors of its own choosing.
Of course, if I go the "Single Symbol" way, I can't generate a proper legend of map units in Layout.
I'm new to AnyLogic and trying to figure out how Agent-based models should be set there. There is a famous Epidemic model, which I'm trying to reproduce. Most tutorials on classical ABM deal with old GUI settings.
For example, in version 8.5+, which is actual now, the Environment object (that was used for positioning of layouts) has been deprecated.
Now I see that new object Canvas is used to put the layout with agents on the page. But the structure of source code file is a bit unclear for me and I've failed to find relevant description how Canvas can be set for the purpose. (Besides I'm not sure that this is recommended way of doing this task.)
Question: I would love to learn the right way to arbitrary position the area with agents on the page. Below you may see what I get by default.
After some playing around, the 'minimalistic' functionality is as follows.
One should create some population with arbitrary name Person (population name people adds automatically).
The following structure of the Project is to be reproduced (arbitrary names are marked with yellow).
Comment: after adding a Canvas called mapCanvas one adds the function setCanvasCellColor with following body:
mapCanvas.fillCircle(person.getX(), person.getY(), 3, color);
It is clear that former two arguments stand for coordinates of a given point, then its size (i.e. 3) and color. Do not forget to add two arguments used in the body, namely, person as Person and color as Color.
From Entry Action of the statechart named state call the just made function. I've put black color here just for the sake of demonstration; chartreuse constant gets used instead in the Epidemic example.
main.setCanvasCellColor(this, black);
Finally, you may run the model to get the following picture.
Note
If one is reluctant to bother with Canvas, use Main - Presentation - xxx_presentation and click Draw agent with offset to this position checkbox.
I want to draw a conventional stacked chart, with a legend showing what the colours mean, but what I get is a legend box showing lots of names of the form "Stacked_GenericChart_Series_1_4"
The standard way of creating the chart (by giving the constructor a 'a*'b seq seq) doesn't seem to have any way of setting the series names, either before or after the chart has been created. On the other hand, the old-fashioned way (explained at http://blogs.msdn.com/b/carlnol/archive/2011/10/27/fsharpchart-release-supporting-stacked-charts-version-0-60.aspx), which would enable me to add a name to every chart, doesn't work at all with the current chart library, because the current one won't take a 'a*'b seq.
I note the source shows a constructor parameter called "Labels", but it's commented out.
There must be some way to set a chart's labels! Where should I be looking?
I am using Behavior Search to calibrate my NetLogo model for 20 different hospital units. I am using global variables to set the min and max for several sliders in my model, but I think this is causing an error in Behavior Search when I attempt to load the parameter values from the model. However, I don't want to manually enter these parameter ranges manually each time I use Behavior Search.
Is there a way to get around this error? Is there a way to set the min and max for a specific slider to a constant, rather than using global variables?
Thanks for your help!
BehaviorSearch developer here -- if I'm understanding your question correctly, your NetLogo model has a slider which has a min/max constraint that is not set to a constant, but is instead set to a global variable (in the slider settings, accessed from the NetLogo interface).
When I choose such a model using the BehaviorSearch GUI, and then click the "Load parameter ranges from model interface" button, then I get the value of 0 for that constraint. (I don't see any error message -- just the value 0 (if you're getting an error message instead, then I may not be understanding your situation correctly, and perhaps you could post exactly what error message you're seeing?)
This will be true even if you are setting the slider min/max to a global value in the special STARTUP procedure (see: http://ccl.northwestern.edu/netlogo/docs/dict/startup.html), because STARTUP is only run when a model loads in the NetLogo GUI, and not when a model is loaded in headless NetLogo.
Thus, unfortunately, I think the answer to your question is: "no, there isn't a way to get BehaviorSearch to load the parameter ranges from global variables within the model".
Some possible work-arounds:
BehaviorSearch is open-source -- some changes could be made to it -- i.e., maybe adding in a call to "startup" whenever BehaviorSearch GUI loads the parameter ranges would be sufficient for you.
If you're only doing a few searches, I don't see why manually editing the parameter ranges would be particularly onerous. However, if you're generating a lot of different searches with this model, then I can see how it might be an issue. The .bsearch files are just XML text files, so you might consider generating them without the BehaviorSearch GUI, e.g. using a scripting language.
I don't quite understand how to use application specific YAML tags, and maybe its because my desired use of them is purely wrong. I am using YAML for a configuration file and was hoping to use tags to provide my configuration loader with a hint as to what datatype it should parse the data into - application specific datatypes.
I'm also using libyaml with C.
So I'm trying to do something like...
shapes:
square: "0,4,8,16"
circle: "5,10"
In my app I'd like to use tags as hints so I can load the values of square into my square data structure, and the values of circle into my circle data structure (these values mean nothing in this example).
So I'm currently doing:
shapes:
square: !square "0,4,8,16"
circle: !circle "5,10"
Libyaml will provide a tag of "!square" when I'm passed the scalar "0,4,8,16". Is it valid to use this tag to provide my loader with a hint of how to process the scalar?
Since it does work for me, I'm more curious to know if its proper. And if not, how would I go about making this more proper.
Thanks.
I know that this is an ancient question, but anyway I've seen !int, etc being used in yaml files before so I went to look up the specs at Yaml 1.2 Spec # Tags
application specific tag: !something |
The semantics of the tag
above may be different for
different documents.
As per the document, it does look like your intended usage of tags is correct for application specific tag.