I have some labels arranged along the outside of a series of arcs (generated by pie charts). These labels are positioned along 'copies' of the pie arcs, which works to fit them nicely, but they unfortunately also cut them off prematurely, as seen in the screenshot below (in this case, an 'i' from the beginning and bracket contents at the end).
Is it possible to tell the text to extend beyond the path's limits? Or failing that, to extend the path itself along its existing course?
edit: The code I'm using to make the arcs is pretty much exactly what's found here: https://www.visualcinnamon.com/2015/09/placing-text-on-arcs.html.
Related
I'm trying to create a geochoropleth that maps subregions, but also includes outlines of larger regions. (You can think of it like mapping counties, but then wanting to include thicker outlines of states). Not all subregions are part of larger regions that need to be outlined. (Most aren't.) You can see an example of what I'm trying to replicate here:
What's the best way to add this regional outline to my map? I've tried keeping the regions and subregions as two separate files, with two overlaygeojsons calls in my geochoropleth call (with added d3 styling to change the fill and stroke to just be an outline). But when I do - the projection of the regional outline layer is strangely offset from the lower one.
I've also considered having both sets of boundaries in just the one geojson. However, I wasn't sure how to work with this.
While it would be nice to be able to mouseover the boundaries of the larger regions and get a tooltip before crossing over into the individual subregions and getting their tooltips, this isn't a must. I could live with just outlines around the regions. Please advise on the best way to do this. Happy to provide more detail, and thanks so much!
EDIT: I discovered that I had a misplaced transform tag which is what offset the second layer. Fixed now!
it looks like both nodes and edges are drawn after (x)labels, and are therefore sometimes obscuring them. -- is it possible to have labels be drawn after everything else, so that they are always on top?
edit:
outputorder="edgesfirst" helps with the edges at least, but but node xlabels are still sometimes obscured by other nodes.
edit 2:
my workaround for now: use svg as output format. move all <text> tags to the end of the file. convert to pdf.
I'd like to transition between curve types using D3.js.
Take a look at this block. The data stay the same but the curve type changes. I was expecting the paths to maintain their approximate positions on the plane -- the data stay the same, after all -- but they don't. The paths appear to be redrawn, although I don't understand why with basis to linear the paths seem to be redrawn from left to right whilst with linear to basis the paths seem to be redrawn from right to left.
I've read Mike Bostock's post on Path Transitions, but I think this is a slightly different problem. There, the data change but the curve type remains the same. Here, the data stay the same but the curve type changes.
Thanks in advance for any help!
To understand why you have such a strange transition, let's compare the d attribute of the paths using a curveBasis and a curveLinear.
First, a curveBasis:
d="M0,101.2061594964L45.48756294826797,89.52282837400001C90.97512589653594,77.83949725160001,181.95025179307189,54.47283500680002,271.46268884480395,84.08731623460001C360.975125896536,113.70179746240001,449.0248741034641,196.2974221628,538.5373111551961,222.09899531679994C628.0497482069281,247.90056847079998,719.0248741034642,216.90809007840002,764.512437051732,201.4118508822L810,185.915611686"
Now a curveLinear (same data):
d="M0,101.2061594964L272.92537768960784,31.10617276200003L537.0746223103922,278.89304686319997L810,185.915611686"
As you can see, the path is way simpler with curveLinear. So, the strange transition is the expected behaviour.
A possible solution is using a path interpolation, as proposed in this code from Mike Bostock.
Here is your bl.ocks with a path interpolation: http://blockbuilder.org/anonymous/02125b1fb145a979e53f369c4976a772
PS: If you want to avoid that strange transition when you load the page (all paths coming from the top left corner), draw them the first time using a regular attr method.
My graphs currently indicate "no data" by calculating the holes in my datasets, then generating a new fake dataset that ranges from nil to max(all-y-values), thus making it look like a full-height background. I make it an "area" dataset and apply an SVG pattern to make it look like this:
The problem arises when the y-axis scale is greater than the data, in other words when max(all-y-values) doesn't coincide with the top of the graph.
I need to make these shaded background intervals always the full height of the graph, and I'm willing to rethink the whole process of adding them.
My recent attempts have been trying to follow the "filling an area above the line" example described in D3 Tips and Tricks as well as the NVD3 documentation and various other resources, but I haven't seen anything working.
This is the "filling an area above the line" example from that link:
Any solution must either use ClojureScript and Om or at least be directly compatible with them, since I already have a proof of concept in the above links and I am looking for more.
i am trying to figure out if there is a reasonably easy way to extend NVD3's lineChart model to allow variable stroke widths along each line path in a chart.
specifically, i am dealing with a simple line chart where i need to show the year-on-year growth of employment in different sectors (for which NVD3's lineChart works perfectly), while also giving an idea of the relative weight of these sectors (i.e. agricolture might be growing while employing only a few hundred people overall, while retail might be struggling but still be employing a large percentage of the population) - this won't be a linear scale of course, but assuming that relative weight of each sector varies across time, a thicker line could represent a sector with more employees than one with a thin line.
obviously i could very easily change the stroke width for the whole line using i.e. an average weight of each sector across the whole timespan, but as far as i understand there is no way in SVG to specify a varying width of a single path element: would it make sense to create an NVD3 model that builds on top of lineChart but splits each line into discrete polygons (triangles?) for each year-on-year period?
Looking for an answer to this myself. It seems there is no easy way, but one possibility is to use the stroke-dasharray attribute.
http://owl3d.com/svg/vsw/articles/vsw_article.html
Essentially, you can create a series of cloned paths, covering a range of stroke widths. If you turn them into dash arrays, you can play with the spacing between dashes to control which paths are visible at each point.
Depending on the shape and width you are looking for, you may also be able to fudge it by adding a second path element with a varying offset from the first.
Perhaps generate a closed path and apply a pattern fill or regular fill on that path. The closed path is effectively a triangle shape, to mimic a line of varied width.