Curve Fitting Through A Collection Of Points?
Jun 23, 2011
I'm working in .net 2005. I have a collection of points and I'm creating a polyline with them; however, I need to curve fit them so that they appear to be some what straighter.
If you look at my picture, you can see the blue dots represent the points and the red line is a represenation of how I'd like the final results to be. (Basically, I need to line to appear straighter and less jaggedy looking than it is now).
I didn't know if I should try to see if there's some plug-in for doing this or if vb.net has anything I could use to do this myself.
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Jul 13, 2011
I am drawing an arc within a square or a polygon with the maximum possible radius inside.When the arc is drawn within the boundary of the square or polygon,the arc length will intersect at few points on the square or polygon.How to find the coordinates of the intersecting points of arc at the periphery of the square/ polygon?
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Jul 22, 2011
I am looking for a way to be able to export a beizer-curve (a curve like in the example below)from my app to a DXF-file.What I need is a way to calculate the control-points and parameters that DXF-format requires (format as in link below)
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Jul 26, 2010
The picture is a graphicspath drawing a curve through the specified green dots... the red points are the Bezier points that are auto generated by the graphics path.
Basically I want to pass in an array of points (in this case the green dots in the pic) and get an array back of the Bezier (red points) - I want to calculate the location of these points MANUALLY - and not use the graphicspath object to work it out.
It doesn't have to be exactly the same just similar.
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Nov 2, 2011
I have a collection which is a list of points, and I need to mix them all up before passing them into an algorithm - similar to if i was to pour them into a bad and shake the bag up.
how i might approach this? The collection will always have a different number of points in it..
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Apr 29, 2012
Instead of defining the Points in Series Collection Editor, can I define them from textboxes, numeric up down or something like that?
Example: Having a numeric up down, the number I put there appears as Y value for a X value that never changes, even when I change the numeric up down value.
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Apr 20, 2010
is there a way to offset the points in a polygon without having to change each one individually the points are in an array
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Feb 26, 2010
I am trying to auto fit columns in excel using
Dim objxlrange As Excel.Range
objxlrange.Columns.AutoFit()
I am currently getting this error "object reference not set to an instance of an object" Using the keyword NEW does not work to fix this problem. Is there another way to AutoFit Cells in excel? I will continue to look for the answer and I will post it here if I find it.
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Oct 29, 2009
having trouble sizing my flash files to fit into a Web Browser form, similar to stretching a picture box image.I try to publish various sizes from my Flash source file, but I only get a zoomed version of the same size, about 500 x 500 pixels every time?
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Sep 11, 2011
I have a program and wish to generalise its appearance at startup on different machines. This worked OK until I moved it onto a Windows 7 unit with a 22" screen. The front page covers less than 2/3 of the screen. I know I've asked the system for 'working area' but could not find a reference to the entire screen which other applications seem able to use. How can I catch up with them? The code is from VB in VS2005. Is this my limitation?
[Code]...
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Dec 21, 2009
i am generating a report in vb.net using itextsharp. sometimes the entire report does not fit on one page and i need to know when itextsharp is adding a page to the document.
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Jan 31, 2010
how can i get the points which make a polygon from a region which was derived from the polygon's points?
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May 24, 2011
I want to know are you have trend view control.Each second I receive temperature value, I want display the temperature curve (trend graphics).
Are there have existing control to use? If not, how can I achieve this.
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Apr 2, 2012
i can receive datas form serialport, but i want to draw a curve realtime use these data. so
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Sep 14, 2010
I need print a curve of real time on the printerx 820G printer.I must use API LineTo to print the curve.
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Jan 3, 2012
I have a large set of latitude and longitude coordinates from a GPS which, when plotted, creates a 'jerky' line over time. I would like to 'smooth' this line into another set of coordinates which I can then plot to make the track more 'smooth'.
I may need to add more intermediate coordinates to do this. I just wondered if there are any code snippets out there or even MS Excel functions
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Sep 21, 2011
I am trying to write a function in VB.NET that takes a value and returns it's y-position on a Bell Curve.
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Dec 19, 2011
Write a program to analyze a list of grades to determine the number of A's, B's, C's, etc. after applying a curve percentage selected by the user. When the form loads it should contain all the grades and available curves in the list boxes on the left. The user selects a curve and clicks the "Apply Curve" button. The program should display the curved grades (based upon the selected curve) and the grade distribution in the list boxes on the right?
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Jul 9, 2009
How hard would it be to graph a curve of a function in a VB form.
Attached is a graph from excel which is exactly what I need to do.
I have the function of some fluid properties and I'd like to choose a min and max temp then have the function graphed, with temp as the x and the fluid property as the y which would auto scale to fit the curve.
Actually now the program i have to return the properties at one temp is just a GUI front end to call a fortran program to return the properties so actually if I just use that it'd be graphing points and not directly from the function. I can always make it completely VB based if graphing from a function is easier than points. It'd be a slight pain to rewrite all the code for the functions though.
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Jun 22, 2010
How do I curve the edge of a User Control?
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Jan 30, 2011
I am trying to write code in vb.net to find a equation when data points are given. For example (1,5),(2,6) etc. I need to find a equation(not necessarily always linear) from the given points. How do I calculate a trendline for a graph? How to get equation.
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May 17, 2012
How to make a color curve adjasment for editing colors of an image?I found a C# project on Mr.SkyDrive but the problem is the coloring adjasment, because the coloring adjasment wasn't as other programs adjasment it wasn't correct if you view the image closely you will see some red, pink, and green pixels: (the curve like this must make the image negative)
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Mar 2, 2010
I have several points where I draw a curved line from point to point using:e.Graphics.DrawCurve(p, theArrayOfPoints)Was wondering is it poss to draw text starting from the 1st point that followed the curve? This way the text bends.
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Sep 14, 2009
how to make a polynom curve in VB.net?I need to take let's say 10 values and make it to a 2 order curve and extract the coeffiecients (A B C).
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Nov 21, 2009
My problem is centering the 0,0 points of my graph to the center of my picturebox
Dim picBoxWidth As Integer = picGraf.Size.Width
Dim picBoxHeight As Integer = picGraf.Size.Height
Dim halfWidth As Integer = picGraf.Size.Width / 2
[code]....
So how to I tell it to start at the center of my picturebox names (picgraf) btw.
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Mar 2, 2011
This question may be off-topic. If it should be posted in another place (even on another board) For some given curves (see sample below) I have to quantify whether the red dots in some regions of the curve are more dense at the upper or lower edge of the curve. Which algorithm might be adequate to perform this task? The curves are constructed from measurements. (No mathematical formula behind it.) Every data point has two dimensions: A value in the range 4000-7000 and a second value 0-255.
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Jan 15, 2010
Is it good practice to store sub-collections of item X inside a parent collection of item X for caching 'filter-queries' which are performed on the parent collection? (They won't be used together (as in color AND type).) Or is it also ok to just Loop over the collection and return the correct entities in a temporary collection?
[Code]...
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Sep 7, 2011
I have the following classes:
Product, Service and OrderItem
Product and Service must inherit OrderItem. So basically I want to store OrderItem object in my shopping cart and these object are store in a list.
Public MustInherit Class OrderItem
Private m_enuItemType As TypeOfItem = TypeOfItem.None
Private m_strUserID As Integer[code].....
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Jun 27, 2012
I looked at several questions/answers posted already such as this one on a planar polygon but could not find one that explains results in 3D such as the one shown in this paper and this one on "point cloud skeletonization through Laplacian-Based Contraction" where this quadratic equation comes back in both.
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Feb 8, 2010
I have been researching for a couple of days now and to no avail. Does Anyone know how to make a custom collection that take advantage of the collection editor? I would like to be able to have 3 Color Values, 1 Boolean and 1 String.
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