Formula To Lookup And Interpolate
Jun 8, 2007
I got a table of two columns (A1:B6). One column (A1:A6) got temperature values and the other column (B1:B6) got enthalpy values as a function of temperature values as shown in the attached file. All values in the table are empirical values and I am trying to use them to obtain the enthaly (B11:B21) for my own temperatures (A11:A21).
I can use VLookup formula to do so but it won't be accurate because the enthalpy values are very sensitive to temperature changes. I need to use table A1:B6 and interpolate for temperature values that are located in between the integer temperature valuse. e.g. if the temperature=1.5 (between 1 and 2 in the table), how can I obtain the enthalpy value=15 (between 10 and 20) using the table.
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Mar 29, 2009
I just have a quick question with regards to two-way interpolation of data.
I have a data table which has x-values, y-values and z-values.
I need to obtain an interpolate value for z, given a value for x and a value for y.
The x value specified is 1.569 and the y value specified is 1.66.
I know how to use the FORECAST formula for a simple x, y table, but I have no idea what to do here when I need to find a z value, given the x and y values.
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Dec 7, 2009
I have data essentially comprising a set of points with x and y coordinates. Is there a way to index and interpolate between points?
I can use INDEX or LOOKUP to look up a y value fo a valid x value but don't know a way to interpolate if the value is between x values. Is this possible?
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Oct 30, 2009
i have a spreadsheet with a column of numbers in increments of 5 ie 25, 30, 35, 40, 45, 50, etc. and an adjacent column of decending numbers ie 275,273,262,250,238 where the numbers in column b decrease by varying amounts each time. for a given value say 37 i want to interpolate between the corisponding values of 35 and 40 to give an answer.
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Jul 13, 2009
i'm trying to write a sheet that records weight from a date and user input
trouble is people are likely to miss days out and i want to fill in the missing dates weight based on actual inputs from other days. if i make it easier and say it like this column A is the weight, column b is the number of days gone
as an example i've made it straight forward but left 4 values out
A1616B161
A1515B152
A14B143
A1313B134
A1212B125
A1111B116
A10B107.....................
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Jan 23, 2009
a formula that would interpolate the volume in the below worksheet....
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Aug 22, 2008
I have an array of data like below:
1
3
5
7
9
I need that array interpolated to say 20 data points but the first and 20th data point must be the actual first and last data point of the array (1 & 9 in the example). I have downloaded the xlfun software but the interpolat function only does 1 point at a time...than as you drag the function down it changes the initial array. Of course I realy have anywhere from 40-60 data points to be interpolated to 100.
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Feb 14, 2007
With a known X and Y, trying to solve for Z from a table. ie: IF a variable X is defined across a row, another variable Y defined down a column, the data field Z fills in-between. What do I need to use to interpolate for both X and Y to solve for Z?
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Sep 7, 2007
I am looking to write excel function that would be able to interpolate between two list of values. One list containing xValues and another yValues and a x value the specified for which the appropriate y value is to be returned. For the moment I have written a short function interPLinear into which I wish to feed an array and then simply add those together. This is so that I can make sure that my syntax is correct. Unfortunately I am struggling with that at the moment. My function looks like this.
Function InterPLinear(xValues() As Double)
Dim Sum As Double
InterPLinear = 0
InterPLinear = InterPLinear + xValues(1)
InterPLinear = InterPLinear + xValues(2)
InterPLinear = InterPLinear + xValues(3)
InterPLinear = InterPLinear + xValues(4)
InterPLinear = InterPLinear + xValues(5)
'I know that there will be only 5 values, will make it generic at a later stage.
End Function
In the spreadsheet I have created a short table with 5 rows and 1 column with values 1 to 5. In another cell I have entered the following =interplinear(A1:A5) and I have tried the following as well {=interplinear(A1:A5)} Could you perhaps tell me how I can correctly access this function so that it does not return #value
I have attached the file if it is needed
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Nov 7, 2008
I have a question on data interpolation with Excel 2007. Normally, this wouldn't be too much of an issue for me, but for some reason I cannot figure it out.
I'm working on an Income Statement, which is designed for 5 years. I have values 1 and 5, which are given to me (B7: 3,500,000 and F7: 5,200,000). I'm trying to figure out the other 3 years of revenue assuming a growth trend. The values should fill the series B7:F7.
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May 11, 2009
I have pasted 5 fields with some random values that are in A1 to E1. E is the column I am trying to populate to fill in the missing data for C.
I have written a function that will interpolate between 2 deltas using the dates. Assuming that June 09 will always have a corresponding delta (e.g. here 33) how can i populate the INTERP column using my YINT function. I can do this manually 1 at a time, but the already-filled cells in the Delta column will not always be the same and manually would take ages....
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Aug 22, 2008
I was using the macro provided by shg in post#6 of this thread: Interpolate Two-dimensional Array? ...
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Oct 25, 2007
Actually, I've created the user defined function (UDF) to interpolate (both linear and bilinear). It's just, I keep getting this annoying error that says "A value used in the formula is of the wrong data type." But here's the kicker...I converted the UDF into a subroutine for trouble shooting, and I was able to step through the entire code and get the correct output.
Function itcinter(efpd As Single, pwr As Single) As Variant
Dim rnge, mtrnge As Range
Dim w, x, y, z, xx, yy, b As Single
Dim scenario, a As Integer
Dim J As Variant
scenario = Worksheets("Input").Range("B1").Value
pwr = pwr / 100#
If (scenario = 1) Then
Worksheets("ITC").Select
'Make table into a range for VLookUp
Set rnge = Worksheets("ITC").Range("A3", [A3].End(xlDown).End(xlToRight))
Set mtrnge = Worksheets("ITC").Range("A3", [A3].End(xlDown))
'If the given value does not match a table value exactly
On Error Resume Next.......................
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Jan 14, 2010
I have 5 worksheets each with tables that are formatted the same on each sheet. I have named each table as a named range (ex:filter5tsd15BSF). I have a userdefined function that interpolates values for a single table in a vba module. I can make this function work for a single table by calling the function as =Linterp(filter5tsd15BSF,C12) so I know the function is OK. However, I really rather program this some way that all the tables get passed to the function and then a select case for the conditions for which filter and which TSD (15 or 25) will then select the correct table.
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Nov 12, 2008
I have 3 Sheets named Paid, Rejected, and Reprocessed.
On the Paid and Rejected sheets I have 2 fields Customer # (Column A), and Amount (Column Q). (The customer # field has many duplicates but the amounts are never duplicates)
On the Reprocessed sheet I have all the rejected items (all fields) and also a field named Reprocessed. I need to use a formula that will check the Paid sheet for any items that have the same Customer # and Amount and return the amount
There are 8,216 rejected items and 45,047 paid items. Some items were originally rejected have been reprocessed and show under paid.
Any thoughts on which formula I should use?
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Jan 28, 2009
In my workbook I have multiple sheets but I'm attaching a very simple workbook to demonstrate what I'm trying to accomplish. In my "Lookup" tab/sheet. I want to have known Latitude and Longitude data that will exist in columns A&B. Columns C & D will have address numbers and Street Name. I would like my lookup formula to find the longitude and latitude data from my "lookup" sheet, when the matching address information is typed in, in my 2009 sheet. I have to keep the street numerics and street name separate on this worksheet as well. I believe I'll need two separate lookup formulas as I need these formulas to start in cell G4 & H4 in my "GeoCoding1" sheet. Is it possible to have four columns of data to be viewed in a lookup formula? I tried this formula in cell G4 (GeoCoding1 sheet)
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Jan 30, 2014
Why this below formula is giving me a #N/A result when entering 'Motorcycle', '4x4' or 'SLR' into cell H2?
=SUM((LOOKUP(F2,{0,"Standard"},{0,8.99}))+(LOOKUP(H2,{0,"SLR""motorcycle","4x4","Standard"},{0,12.99,9.99,10.99,8.99}))+((LOOKUP(K2,{"Acrylic","Aluminium"},{0,7}))*IF(AND(E2="Y",G2="Y"),2,IF(AND(E2="Y",G2="N"),1,IF(AND(E2="N",G2="Y"),1,0)))))
If there is an error?
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Jun 20, 2007
does anyone know if there is an easy formula to have a cell (h18) copy another cell (J2) if the value in a cell (h17) is greater than the last value entered in the row (17), and if it is not greater than the last value, or if there is no other previous value, to copy cell (K2)
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Jan 12, 2009
I am using the following formula to look up data from a seperate sheet and cannot get it to work. all three numbers are on the seperate sheet ... some show correct and others show not there when they are,
EXAMPLE
DATA
A B
99993728569820 you found it!
99993728569820 no
99993767688837 you found it!
FORMULA
{=IF(A3=Sheet1!A:A,"you found it!","no")}
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Jun 18, 2007
Is it possible to have a macro on vlookup formula? Tried the below code but the lookup result is not what it should be. I know this could easily be done a keying in the lookup formula without using code. But it would be faster if it could be done by using a macro.
Dim c As Range
Sheets("Data").Select
For Each c In Range(Cells(1, 1), Cells(Rows.Count, 1).End(xlUp))
c.Offset(0, 1).Formula = Application.WorksheetFunction.VLookup(Cells(1, 1), Sheets("Master").Range("A1:B10"), 2)
Next c
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May 13, 2014
How to arrange a lookup formula.
Book2.xlsx
In this example, I am attempting to look up one value based on two criteria. The month must match, and the location must match. In doing so, the value "1" should be returned in the example.
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Apr 6, 2009
I have rows with text and numbers. In order to ensure that the numbers are accurate, I have a "QC formula" that calculates a check using all of the numbers from 1 row. The challenge is that the "QC formula" needs to vary depending on a text value within the row.
How can I lookup up the text value and then return the correct active formula for that row? I have too many differet text values to do a nested If statement. see simplified example below.
Condition ABCFormula' Needed based on Condition
Red123A*B*C
Blue123A+B+C
Green123(A+B)*C
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Oct 6, 2009
A B
1 2
1 3
1 2
2 3
3 2
1 2
2 1
Im trying to work out a formula that will look down Column A for the number 1 and then will count the number of times the number 2 appears on the same row as number 1 in Column B. The answer I should be getting is 3.
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Oct 28, 2009
I am trying to calculate a value by using two lookup statements in one formula. However, I get either #N/A, or very wrong results. Here is the formula:
=LOOKUP($B26,GrapePricing!$A$2:$A$15,GrapePricing!$B$2:$B$15)*
LOOKUP($B26,$B$5:$B$17,$D$5:$D$17)
What I need is to get the value in B26 (it is text, "Merlot"), go to the GrapePriceing sheet and find Merlot in range A2:A15, get the price of Merlot from the GrapePricing sheet range B2:B15, then multiply that by the matching value in the D5:D17 range.
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Aug 3, 2009
The enclosed spreadsheet includes a couple formulas I’m having trouble with.
The questions themselves are detailed in the document.
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May 8, 2012
I have been struggling with what seemed at first like a very simple formula. I have the sample data as shown below and I am trying to work out a formula that provides the latest value in sheet 2 from sheet 1 column AF based on a number of conditions.
If Sheet2 A1:A500 = Sheet1 F1:F500
And Sheet1 G1:G500 = max & Sheet1 AF1:AF500 doesn't = blank (i.e. last value in column AF)
Then return adjacent value from Sheet1 AF1:AF500
Sheet 1
F-----G-----AF
127--1-----15.6
127--2------3.1
128--1------2.0
128--2-----
129--1------2.5
129--2------1.6
129--3------2.7
130--1------3.3
130--2------3.1
130--3------1.6
130--4------5.4
130--5------
130--6------
Sheet 2
A--------B (desired results)
127-----3.1
128-----2.0
129-----2.7
130-----5.4
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Feb 23, 2014
I need a formula to look up the value in another workbook. I have a number of workbooks that have a list o competitor's names and their scores The competitor names are not in the same order in each workbook. I have created a master workbook to extract the score from each workbook. I need the formula to match the name in another workbook and then pick up the score cells to the right.
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Sep 19, 2007
Possibly to combine If statement and lookup stmt. I have a spreadsheet that calculates principle, interest, and combined pmt amount based on certain amortization and payment frequency. In one cell I would like the expiry date to pull in (the expiry date would be the date that the fund balance would be at zero ie. all payments have been made and principle is nil). I am trying to make a formula that will search down the payment column and when it sees a negative number or zero, it will fill in the expiry date (which is in a second column) that is attached to that figure.
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Dec 3, 2008
I have the following:
"ClosQtr" = 8034 (Closqtr is a named range cell)
As a named range cell "Curr_Mth" changes (which can take end of month values from 30Jun08-31Dec09 only),
I would like A2 to be:
ClosQtr+1 "Curr_Mth"=30Jun08
ClosQtr+1 for 30Jun08
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Dec 26, 2008
I need to know how can I code a Lookup formula in a VBA.
In Sheet1 of excel, I have several records of data in column A to E.
I have designed a userform, in which user enters data of column A in a textbox and on click of a button, it writes the textbox value in Sheet2.
I need to code a formula in VBA, so that column B and E of Sheet1 data is written in column B and C respectively of Sheet2 (corresponding data of textbox value).
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