473,836 Members | 1,501 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Interpolation?

I'm relativly new to C++, and have been looking for a way to
interpolate data (i.e. a table indexed by 2 arrays, or just an array
indexed by another array). I haven't been able to find an easy way to
do it, other than actually coding the math, which would be a pain
(especially since the indexes aren't equally spaced). Is there a
common library file or something for interpolation?

Thanks in advance!
Dave

Jul 23 '05 #1
1 2463
da*********@gma il.com wrote:
I'm relativly new to C++, and have been looking for a way to
interpolate data (i.e. a table indexed by 2 arrays, or just an array
indexed by another array). I haven't been able to find an easy way to
do it, other than actually coding the math, which would be a pain
(especially since the indexes aren't equally spaced). Is there a
common library file or something for interpolation?

Thanks in advance!
Dave


Google on this keyword combo:

c++ interpolation lib

It returns links to several libs - some free.

Larry
Jul 23 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

14
5206
by: Charles Banas | last post by:
I'm not sure if this is the right place to ask about this, but I've seen several posts in the past regarding Akima's Bivariate Interpolations routines, and i'm wondering if someone can give me some ideas or PD code I can put to use right away. At the moment, I'm maintaining a contour calculation and plotting program for radio wave propagation studies. This program uses a number of routines written by and for the FCC in Fortran in 1976...
3
3917
by: Jonas Ernst | last post by:
Hi, Can somebody give me some hints how to do a line interpolation without using floating point arithemtics? The function shall do a linear interpolation between 2 points (line interp?) and it shall return the y value to any x value given. e.g. p1: (0,0) p2 (1000,50) y value to calculate at x=600
2
2958
by: Kun | last post by:
I have an html form that takes dates and inserts them into a mysql file. Currently, users have to type in dates in the yyyy-mm-dd format. As of now, this process works with the sql. However, I would like to make this process easier by: 1) providing drop down menus for year, month, and date respectively. in a failed attempt, i tried made 3 drop down lists (dateyear, datemonth, dateday) respectively and then used string interpolation...
5
3816
by: xandra | last post by:
i understood the concept of interpolation search. but i couldn't understand what would be the steps for that search. for example, if i'm searching for J in this file A A B E F H J M N N N N O P P P P P R R R R T T T Z Z Z Z Z Z Z i know that i have to look in the begining of this file. but what is the steps to find j/ thank you for your help
5
667
by: different | last post by:
Hi, I have a program which reads a file containing integers in . The program reads the value of a variable every 2 seconds, then maps it to another interval, say , obtaining a new value. I already have a function which updates the variable, gradually changing from the old one to the new one during the 2 seconds, which uses a linear function. Know I need to make the value of the variable change between old and new in a "logarithmic way",...
0
1292
by: MonkeeSage | last post by:
There are several string interpolation functions, as well as string.Template. But here's yet another. This one emulates ruby's inline interpolation syntax (using #{}), which interpolates strings as well as expressions. NB. It uses eval(), so only use it in trusted contexts! import sys, re def interp(string): locals = sys._getframe(1).f_locals globals = sys._getframe(1).f_globals
0
2279
ncochran
by: ncochran | last post by:
I need to create a windows application that will allow me to enter values for a triple linear interpolation. The program should output the answer to the center label when the user presses the "Go" button. Can someone please help me figure this out? I know the basic code to solve for the linear interpolation but I do not know how to send it to the output. I would like as many responses as I can get. Thank you.
10
12814
by: John Passaniti | last post by:
(Note: This is not the same message I posted a week or so ago. The problem that prevented my previous attempt to work was a silly error in the template system I was using. This is a problem involving variable scope in JavaScript.) I have a lot of code that generates HTML on the fly. This code has tags with id attributes derived from variables. A small example: blah('<span id="' + dev + '_' + mod + '">...</span>');
5
4471
by: August Karlstrom | last post by:
Hi, Does anyone know the correct syntax to interpolate a class variable, $x say, inside a string? I tried "{self::$x}" but it produces the string {self::x}
0
9826
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
9674
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
10860
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
1
10604
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
10261
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
1
7796
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
5831
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
4466
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
3
3116
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.