Looking for an efficient and easy-to-use software tool that helps you manage large amounts of data in Excel? Look no further than TriLookup, developed by Trimill Industrial Systems Inc. With TriLookup, you'll be able to quickly and easily analyze complex data, uncover hidden patterns, and gain valuable insights that will help you make better decisions. Whether you're an experienced data analyst or a novice Excel user, TriLookup has everything you need to get the job done quickly and efficiently. So why wait? Download TriLookup today and start unlocking the full potential of your data!

Excel add-in with eleven powerful worksheet functions for 1, 2 and 3 variable lookup and interpolation. Interpolation modes include: closest-value, linear, piecewise parabolic or hyperbolic, cubic spline and polynomial up to 20th order. The functions can also handle tables containing missing and invalid data. Includes functions to fit polynomial curves through a set of X-Y data points and return a table of polynomial curve coefficients, as well as, determine the best fit polynomial curve. In case of an error, TriLookup functions can either return a standard Excel error code or a detailed text error message, indicating the nature of the error and pointing to the cause of it. Includes online help and example workbooks. Requires Microsoft Excel (32 Bit) (Windows). TVLOOKUP & TVLKP search a multi column table for the lookup value in the lookup column and return a value from the same row of the return column. Can use interpolation and handle missing values. THLOOKUP & THLKP search a multi row table for the lookup value in the lookup row and return a value from the same column of the return row. Can use interpolation and handle missing values. T2LOOKUP & T2LKP search a 2D (X-Y) table for X values in top row and Y values in left column, and return a value from the intersecting row and column. Can use interpolation and handle missing values. T3LOOKUP & T3LKP search a 3D (X-Y-Z) table for X, Y and Z values. Return a value V(x,y,z) from the intersecting row, column and table. Can use interpolation and handle missing values. TVPOLYDATA & THPOLYDATA Calculate polynomial curve coefficients up to a specified order (using the least squares method) for the X-Y data points given in a table. Also determine the best fit curve. TPOLY returns the Y value of a polynomial curve for given a X value, polynomial order and an array of polynomial curve coefficients. It can optionally return the value of a derivative.

Major Update
Added TriLookupLite Freeware edition.
Added installation for Excel 2016 for Windows.
Added support for 64 bit Excel for Windows.
Revised User's Manual.
[ TriLookup release history ]

Excel 97 to 2016

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