Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>It looks like you're using the same <code>peakVal</code> for every data point. Check the <code>-generateDataSamples</code> method and make sure you're storing the correct values in the <code>samples</code> array. If you already have the data in an array, you can skip that method completely and just do the lookup by index in <code>-numberForPlot:field:recordIndex:</code>.</p> <p>Also, check the <code>xRange</code> and <code>yRange</code> on the plot space to make sure they fit your data. Remember that plot ranges are like NSRange—they are created using a starting location and length, not start and end values.</p> <p>To move the labels to the right side of the y-axis, use <code>yAxis.tickDirection = CPTSignPositive;</code>.</p> <p><em>Edit in response to the comments</em></p> <p>Don't call <code>-generateDataSamples</code> every time you get new data. Instead, add the new value to the <code>samples</code> array. Don't forget to initialize the array before using it for the first time.</p> <pre><code>NSDictionary *sample = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithDouble:peakVal],Y_VAL,nil]; [samples addObject:sample]; </code></pre> <p>Once the data is in the array, tell Core Plot to load only the new point. This will be faster than reloading all of the data every time you update.</p> <pre><code>[myScatterPlot insertDataAtIndex:(samples.count - 1) numberOfRecords:1]; </code></pre> <p>You can use the CPTPlot method <code>-deleteDataInIndexRange:</code> to remove old data points if you don't need to keep all of the history in the graph. Don't forget to remove the corresponding point from the <code>samples</code> array also.</p>
    singulars
    1. This table or related slice is empty.
    1. POHow to plot a graph real time using coreplot?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USEric Skroch
    1. USEric Skroch
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POHow to plot a graph real time using coreplot?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COyAxis.tickDirection = CPTSignPositive; is not working in the version of coreplot that I'm using. Needed a small modification, yAxis.tickDirection = CPSignPositive; thank you
      singulars
      1. PO
      1. USMithun
    2. COI couldn't make it working yet, if you don't mind would you please make the modifications to the code? I'm new on here, please help me.
      singulars
      1. PO
      1. USMithun
    3. COAnybody please help me, I've been working on this for last 3 days, please.
      singulars
      1. PO
      1. USMithun
 

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.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload