You probably need to write a custom serialiser.

In case one, a simple Binary search algorithm - Wikipedia, the free encyclopedia[^] should do it, assumign there is no "bad" data. When you data goes bad, that's different, and it becomes necessary to actually search the whole array - if there is one bad value, then it's likely there are more. But the alternative to both is to to it all while you fill the array - since that is already a time consuming process (compared to a search of the results) adding a little extra checking to find the first negative as you fill the values is trivial, and allows you to cope with the second case as well. Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...

It is difficult to answer without knowing how the data are used. But a short web reserach found this: [EIGEN] How to get in and out data from Eigen matrix | Vlad's Blog[^]. So it seems that you can use Map to get a pointer to the complex values. That should be sufficient because the real part is stored first and therefore already at the specified index (when *p is a pointer to a complex array, p[n] and p[n].real() have the same address).

smallkubi wrote: i want my code simplex and efficient, so i hope no more class How would boxing the result be ineffcient? And no, that was not complex. smallkubi wrote: how can i use delegate to define multi-output delegate ? You can return an struct or object, you can use out parameters. Or even a callback that gets called for each output-variable :) Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^][](X-Clacks-Overhead: GNU Terry Pratchett)

ok,i got it. Thank you

A little Linq, perhaps: int[] iary = new[] { 5, 4, 1, 3, 2 }; var sorted = iary.OrderBy(itm1 => itm1).ToArray(); var unsortedIndexes = sorted.Select(itm2 => Array.IndexOf(iary, itm2, 0)).ToArray(); Note that using 'OrderBy creates a copy of the Array. >? sorted {int[5]} [0]: 1 [1]: 2 [2]: 3 [3]: 4 [4]: 5 ? unsortedIndexes {int[5]} [0]: 2 [1]: 4 [2]: 3 [3]: 1 [4]: 0 ? iary // after creating 'sorted using 'OrderBy {int[5]} [0]: 5 [1]: 4 [2]: 1 [3]: 3 [4]: 2 «Tell me and I forget. Teach me and I remember. Involve me and I learn.» Benjamin Franklin

how can i overriding the paint event? please help me a example

Ohm the thread works. The problem is that the code you're Invoking is being executed on the UI thread, not the thread you launched, because, well, THAT'S WHAT INVOKE DOES! And then you put the UI thread to sleep for a second. Once the Sleep is done and the delegate is done running, THEN you UI thread can get back to processing the message pump, like responding to WM_PAINT messages to repaint your window if needed. You cannot touch a UI control properties or methods from anything other than the UI thread. You can create a new Series object and populate it with data in the background thread and THEN make the assignment to the chart object in delegated code. You're doing everything in the delegate, on the UI thread. A guide to posting questions on CodeProject Click this: Asking questions is a skill. Seriously, do it. Dave Kreskowiak

Sorry, I'm not following you. Do you mean you want multiple return values from your function? If so, you'll need to create a class or structure to contain them: public struct Fun3ReturnValues { public int SomeValue { get; set; } public string SomeOtherValue { get; set; } } ... public static Fun3ReturnValues Fun3(int y, int z) { return new Fun3ReturnValues { SomeValue = 42, SomeOtherValue = "Hello", }; } Alternatively, you could use the Tuple class[^], but the meaning of the values wouldn't be as clear. "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

Oh,i found that if 10000points in 1 series, the chart will not be delay. So i want to know,how to make series, that 1000 points be in one line, other 1000points be another line.... make 10 series type ,but in 1 series collection?

I am hoping that the code you have given is not the true code that you are trying to improve. But from this How to: Write a Simple Parallel.For loop[^] Quote: When parallelizing any code, including loops, one important goal is to utilize the processors as much as possible without over parallelizing to the point where the overhead for parallel processing negates any performance benefits. In this particular example, only the outer loop is parallelized because there is not very much work performed in the inner loop. The combination of a small amount of work and undesirable cache effects can result in performance degradation in nested parallel loops. Therefore, parallelizing the outer loop only is the best way to maximize the benefits of concurrency on most systems. One of the first things I always try to do when using Parallel loops is to limit the amount of processors that it could use with the following MaxDegreeOfParallelism[^] option. e.g. ConcurrentBag list = new ConcurrentBag(); ParallelOptions options= new ParallelOptions { MaxDegreeOfParallelism = 2 }; Parallel.For(0,10000, options, item => { list.Add(item); } Every day, thousands of innocent plants are killed by vegetarians. Help end the violence EAT BACON

You can also use a Rectangle struct internally inside the base class. I just made a quick example to show the concept.

Use either the Chart.Pallette[^] or Series.Pallette[^] property. Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...

We would certainly need more info in order to answer your issue: - the code (some skeleton) - what you're trying to do, etc. A google search revealed some possible solutions to your (yet unclear) issue: http://stackoverflow.com/questions/15190347/mscharts-set-xaxis-maximum-results-in-red-cross[^] http://stackoverflow.com/questions/17210257/microsoft-chart-control-redraw-chart-after-failure-red-cross[^] Best, John -- LogWizard - Log Viewing can be a joy!