StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
2806935
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2010-05-10T22:41:56.270
FavoriteCount
0
LastActivityDate
2010-05-10T22:41:56.270
LastEditDate
LastEditorUserId
0
OwnerUserId
12275
ParentId
2806740
PostTypeId
2
Score
1
ViewCount
0
LastEditorDisplayName
text
Body
My first thought is, why try to use LINQ on this? It seems like a better situation for making a new <code>Enumerable</code> using the <code>yield</code> keyword to partially process and then spit out an answer. Something along the lines of this: <pre><code>public struct PricePoint { ulong price; ulong volume; } public struct RangePoint { ulong open; ulong close; ulong volume; } public static IEnumerable<RangePoint> calculateRanges(IEnumerable<PricePoint> pricePoints) { if (pricePoints.Count() > 0) { ulong open = pricePoints.First().price; ulong volume = pricePoints.First().volume; foreach(PricePoint pricePoint in pricePoints.Skip(1)) { volume += pricePoint.volume; if (pricePoint.price > open) { if ((pricePoint.price - open) >= STEP) { // We have established a up-trend. RangePoint rangePoint; rangePoint.open = open; rangePoint.close = close; rangePoint.volume = volume; open = pricePoint.price; volume = 0; yield return rangePoint; } } else { if ((open - pricePoint.price) >= REVERSAL_STEP) { // We have established a reversal. RangePoint rangePoint; rangePoint.open = open; rangePoint.close = pricePoint.price; rangePoint.volume = volume; open = pricePoint.price; volume = 0; yield return rangePoint; } } } RangePoint lastPoint; lastPoint.open = open; lastPoint.close = pricePoints.Last().price; lastPoint.volume = volume; yield return lastPoint; } } </code></pre> This isn't yet complete. For instance, it doesn't handle gapping, and there is an unhandled edge case where the last data point might be consumed, but it will still process a "lastPoint". But it should be enough to get started.
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POHow to transform one list to another semi-aggregated list via LINQ?
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USjdmichal
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. POHow to transform one list to another semi-aggregated list via LINQ?
 singulars
 PostTypePostTypeId
 PTQuestion
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTAcceptedByOriginator
CommentsPostId
1. COGood stuff! This will get me started on the right track I believe. Thanks!
 singulars
 PostPostId
 PO
 UserUserId
 USJ.D.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.