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POCore-plot Question : How to add a data Indicator
primarykey
Id
2325422
data
AcceptedAnswerId
2348472
AnswerCount
1
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2010-02-24T11:04:17.560
FavoriteCount
8
LastActivityDate
2011-06-21T09:55:09.813
LastEditDate
2010-02-26T12:43:36.987
LastEditorUserId
30461
OwnerUserId
50459
ParentId
0
PostTypeId
1
Score
6
ViewCount
3648
LastEditorDisplayName
text
Body
i want to add a data indicator line similar to the following image in core-plot. <a href="http://img203.imageshack.us/img203/9412/plota.png" rel="noreferrer">Plot Image http://img203.imageshack.us/img203/9412/plota.png</a> Any idea how i can achieve this using core-plot. I have just started to understand core-plot, so any tip will be very useful. Thanks Edit : For better understanding i have created a screencast to show what i mean : <a href="http://www.screencast.com/users/GauravVerma/folders/Jing/media/78fbef04-8785-46d6-9347-4f35d257109c" rel="noreferrer">http://www.screencast.com/users/GauravVerma/folders/Jing/media/78fbef04-8785-46d6-9347-4f35d257109c</a> Added on 26th Feb : I have solved partial problem by using two dataplots. here is the current implementation : <a href="http://www.screencast.com/users/GauravVerma/folders/Jing/media/02a1e685-8bf8-41a9-aaa6-5ea6445f6a6c" rel="noreferrer">http://www.screencast.com/users/GauravVerma/folders/Jing/media/02a1e685-8bf8-41a9-aaa6-5ea6445f6a6c</a> I have used two dataplots, one is the main one & other one plots only one data point which is reloaded when slider value changes. Here are my Datasource methods (may help somebody): <pre><code>-(NSUInteger)numberOfRecordsForPlot:(CPPlot *)plot { if ([(NSString *)plot.identifier isEqualToString:@"Blue Plot"]){ return [dataForPlot count]; }else { return 1; } } -(NSNumber *)numberForPlot:(CPPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index { if ([(NSString *)plot.identifier isEqualToString:@"Green Plot"]) { index = floor((double)[slider value]); if (index > [dataForPlot count] -1) { index = [dataForPlot count] -1; } NSLog(@"Green plot index : %f",index); } NSNumber *num = [[dataForPlot objectAtIndex:index] valueForKey:(fieldEnum == CPScatterPlotFieldX ? @"x" : @"y")]; num = [NSNumber numberWithDouble:[num doubleValue] + 1.0]; return num; } </code></pre> Now only problem remains is to find out a easy way to draw the line. Any Ideas ??
Tags
<iphone><objective-c><cocoa-touch><core-plot>
Title
Core-plot Question : How to add a data Indicator
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
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1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USPeter Hosey
UserOwnerUserId
1. USGaurav Verma
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1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
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1. PO
 singulars
 PostTypePostTypeId
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VotesPostIdCreationDate
CommentsPostId
1. COWhich element in the image you're showing is the "data indicator"?
 singulars
 PostPostId
 POCore-plot Question : How to add a data Indicator
 UserUserId
 USBarry Wark
2. COthe red line, which shows the current value. When user moves slider, red line also moves showing the current value on top. For a implementation please look at the Cardex view of Roambi application (http://www.roambi.com/)
 singulars
 PostPostId
 POCore-plot Question : How to add a data Indicator
 UserUserId
 USGaurav Verma

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