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Jun
22
comment Graph adjacency matrix with unconnected nodes
I was typing up my answer when you commented :)
Jun
22
comment Graph adjacency matrix with unconnected nodes
Yes, VertexCoordinates will do what you want.
Jun
22
comment Graph adjacency matrix with unconnected nodes
Related: mathematica.stackexchange.com/a/7183/8
Jun
22
comment How to convert between various ItemSize/ImageSize units?
@Mike you had quite a bit of the answer but it needs some fixing up, for example using some of the material in my answer. If you can do this in the next 12 hours I can award the bounty. Otherwise it will expire.
Jun
20
comment Why is SystemDialogInput failing to return a save file path?
@Mike please don't delete. Aside from the fact that it will bump the question #2000, this is the sort of thing other people might encounter. It might be a "rookie mistake" but there are plenty of rookies out there, especially around the interactive interface capabilities in Mathematica.
Jun
19
comment How can I extend BinCounts to work on Times and Dates?
I haven't got time to test this out now but indeed GatherBy is not enough on its own. But something like {First[#],Last[#]}& @@@ GatherBy[data,datespec] might work.
Jun
19
comment HoldFirst and inserting additional options into a Grid of Graphics
It isn't. Heike's version just was easier to integrate into the rather more complex actual code that I have, so I upvoted all good answers and accepted Heike's as the best one for my needs.
Jun
19
comment How can I extend BinCounts to work on Times and Dates?
GatherBy might be what you need.
Jun
18
comment Use ColorFunction in ListLinePlot with If
Mesh is a substitute for PlotMarkers? Didn't know that!
Jun
18
comment HoldFirst and inserting additional options into a Grid of Graphics
@Rojo - right, that's the one I meant, but it seems to be necessary for things to work. I had already tried the putting Hold and HoldForm in the same place. Odd that HoldFirst in the function definition isn't sufficient once the Map comes into play. That was the thing I'd missed. The second level spec for Cases was just something that hadn't dawned on me when I posted the Q (at 11pm my time) - wrapping in Hold means the arguments of the plot are at second level. I now have a solution to this question that doesn't need Inset.
Jun
18
comment HoldFirst and inserting additional options into a Grid of Graphics
@Rojo you have appended this comment to Heike's answer, where there is an Unevaluated. Your answer also has Unevaluateds in there still. It does seem important. I've accepted Heike's answer because it was the clearest and minimal adjustment to my own code, which now works (hooray!).
Jun
16
comment HoldFirst and inserting additional options into a Grid of Graphics
The other crucial difference from my code seems to be Cases[mheld[[i, j]], _Rule, {2}] with the level specification. Not entirely clear to me why that is needed - something to do with getting underneath the Unevaluated?
Jun
16
comment HoldFirst and inserting additional options into a Grid of Graphics
I'd tried Hold - isn't it the Unevaluated that does the job?
Jun
14
comment how to make graphic timelines in mathematica
Does this handle leap years? The division by 365 in DateConv makes me wonder.
Jun
14
comment Is there a way to convert an image into a Graph?
+1 for SkeletonTransform - what other nuggets of amazingness are hidden away in little-used corners of this language?
Jun
14
comment Is there a way to convert an image into a Graph?
Possibly related: mathematica.stackexchange.com/q/5152/8 I can see how the dots are vertices but how do you know which ones are connected? That's where the percolation approach might be relevant.
Jun
13
comment Incorrect results for elementary integrals when using Integrate
This code returns $Failed on my machine (version 8.0.4, Windows 7).
Jun
4
comment SetOptions or other approach to imposing default styling of text in a BarChart Legend?
Thanks! I hadn't realised that this could be done as well as including the Identity trick in your last answer. (There's a blog post in here somewhere...)
Jun
4
comment SetOptions or other approach to imposing default styling of text in a BarChart Legend?
@MikeHoneychurch :)
Jun
4
comment Selective inclusion of elements in BarChart Legend
@MikeHoneychurch well, in principle I could, but in practice, that won't be me :)