Timeline for Split list of states by run lengths and discontinuous changes in state
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 16, 2020 at 9:23 | history | edited | CommunityBot |
Commonmark migration
|
|
| Jun 5, 2014 at 7:51 | history | edited | Mr.Wizard | CC BY-SA 3.0 |
remove superfluous operation noted by the OP
|
| Jun 5, 2014 at 7:45 | vote | accept | Charlotte Hadley | ||
| May 1, 2014 at 20:05 | comment | added | Mr.Wizard |
@Martin "NonzeroPositions" is actually non-background positions (a SparseArray has a default background of zero but it can be set to other things), in multidimensional form; "AdjacencyLists" is the same but for each row and without the first dimension. If you have any questions please let me know.
|
|
| May 1, 2014 at 20:04 | comment | added | Mr.Wizard |
@Martin I first learned about SparseArray Properties from a post by Oliver Ruebenkoenig on MathGroup. Since them I've made frequent use of them, e.g. as linked here. You can get a list of the Properties with SparseArray[{1}]["Properties"]. Experimentation is perhaps the best way to understand them. (continued)
|
|
| May 1, 2014 at 17:00 | comment | added | Charlotte Hadley | Need to understand the SparseArray SubValues better - it's part of your standard toolbox, where'd you gain the knowledge? | |
| May 1, 2014 at 3:59 | comment | added | ciao | Nah, I doofused the question by not paying attention, penance is deletion... | |
| May 1, 2014 at 3:06 | comment | added | Mr.Wizard | @rasher Thanks! I see you deleted your answer. I found another way to make the insertions that I like well enough (it's cleaner, but not as fast). Why don't you resurrect your answer and I'll leave that ("method #2" to you? | |
| May 1, 2014 at 3:05 | history | edited | Mr.Wizard | CC BY-SA 3.0 |
added 923 characters in body
|
| May 1, 2014 at 2:38 | history | answered | Mr.Wizard | CC BY-SA 3.0 |