Below is a nonlinear model, together with calibration data for which I would like to find the parameters Ro, Kc, a and b.
R = Ro + Kc * (1/(1 + exp(-(a + b*lnC))
Calibration Data
C R 0.00.3347 4.80.4201 7.70.5141 11.20.6177 14.40.6887
Given the calibration data above, how can I calculate or at least estimate these parameters? I do not want to use an add-in program, like Solver, in Excel. I do, however, want to be able to use any existing functions, if necessary, in Excel. i'd appreciate it if someone can walk me through the steps.
I'm having trouble using the worksheet copy command in a VBA subroutine. I have the following line in my code:
[Code] ........
When I step through my code and execute this line, the sheet is copied as expected and put in the correct place, but then instead of the next line of code being highlighted, the pointer jumps to the first line of a function (in a different module) in my code.
In Mr Excel's Pod Cast on April 12th, he showed how to use the OFFSET function to define a range inside a SUM function. Then he had Conditional Formatting that would highlight the range that was being summed. Can anyone tell me what the formula would be inside the Conditional Formatting dialog box to get the OFFSET range to have a certain format?
VB: Function f1(Matrix As Range) 'Does something and returns f1 = a double End Function
And a second function which defines and constructs a matrix of doubles to use as an argument in f1 to return a double:
VB: Function f2(dD As Double) Dim MatrixRed() As Double Redim MatrixRed(1 To dD, 1 To 10) For i = 1 To dD For j = 1 To 10 MatrixRed(i, j) = i * j Next Next f2 = f1(MatrixRed) End Function
I get an output error (#VALUE). I think it has something to do with MatrixRed not being a range anymore?
let me start by saying that I know an example workbook would be useful here, but the part I'm struggling with is the [managementroster.xlsm] file, and there is A. no way I can release it to the internets and B. its so huge/complicated I couldn't even begin to reproduce a portion of it, scrubbed of data, and hope to maintain its functionality in a meaningful manner.
[Code]....
This formula checks a staff number on this spreadsheet, and then goes and looks at the staff number on the roster. Once found, it returns that staff members roster, but changes any manager codes in the MRC list to Mgr, and changes all other roster codes to Free.
I now need this formula, before altering roster codes to Mgr or Free, to only return codes that are a match for another table (or after really. I don't particularly care, so long as only codes are shown that match data from another table). I think an index/match function would do the trick, but this forumula is already at the edge of my excel ability, nesting another function within it is completey beyond me. The relevant cells for the index/match function would be:
This first Match function targets the column. $E3 is the date required, $BA$1:$DN$1 is the range the dates are entered in Match: Lookup value = $E3 Lookup array = '[ManagementRoster.xlsm]Vacancies!'$BA$1:$DN$1 match type = 0
This second Match function targets the row. $A$4 is the department name, $B$434:$B$452 is the range where all departments are entered
Match: Lookup value = $A$4 Lookup Array = '[ManagementRoster.xlsm]Vacancies!'$B$434:$B$452 match type = 0
Index: array = $BA$434:$DN$452
So I think my final function is
[Code] .....
But I have absolutely NO idea where it would fit within my first formula, or how to code it so that my original formula only reproduces results that are found in both sheets, or anything.
I have created a List in excel of various tasks. (See attached example.) Each row contains one cell with a function which equals the cell above it and to the right. So the function for cell C3 would be D2. The only importance is that the cell mirrored is always the cell one above and to the right. However, now I would like to be able to rearrange this List, but the “one up and to the right” function will now be all over the place.
Is someone aware of a function which will target a relative location instead of an exact cell?
I have been looking around have this much code from this site, modified. What I am trying to do is calculate numbers by a position with cells D through K having numeric values. I have 'hardcoded' the cells (D2, E2, etc in the code below), but in reality I only want the current row (so if the formula is on the 2nd row, I want D2, if it is on the 3rd row, I want D3).
My problem is obviously the formula isn't working because I am not correctly tying back to the spreadsheet (Positioncalc.xls). When I put the formula in the spreadsheet it works, but in my script I get 0 everytime.
My Script:
Function Position(rCell As Range, Optional RightPosition As Boolean) Dim vResult
Select Case rCell.Text Case "QB" vResult = (2*D2) + (2*E2) + (2*F2) + (4*G2) + (2*H2) + (1*I2) + (4*J2) + (3*K2) Case Else vResult = "Invalid Position" End Select
If RightPosition = True Then Position = vResult Else Position = "Position not valid" End If
End Function
So, when I put =Position(A2,True) I expect to see the formula results of those cells calculated based on the position (QB, HB, etc with their unique formulas).
My next challenge after this is to highlight certain cells based on the Position. So if A2 = QB, I want cell D2 boldface and Red, etc. I have seen some scripts on colors and such here, so I might be able to figure it out.
I have a range of cells, for this example I will use 2.
Cell E17 = 77/170 Cell E18 = 8/9
Using the following formula: =SUM(RIGHT(E17,FIND("/",E17)))+SUM(RIGHT(E18,FIND("/",E18)))
This bring back an #VALUE! Error as the second part of the formula keeps picking up "/9" however the first part works fine, displaying "170"
Now if I use: =SUM(RIGHT(E17,FIND("/",E17)))+SUM(RIGHT(E18,FIND("/",E18)-1)) It all works. The problem is that I need this to be automatic using the above way means having to add a "-1" to every formula for a cell with only 1 char to be added.
Using the formula: =SUM(RIGHT(E17,FIND("/",E17)-1))+SUM(RIGHT(E18,FIND("/",E18)-1)).....
I have a tracking sheet (attached) that has many functions, but I'm having trouble with two of them. First of all, I have a Worksheet_Change event set that when a cell is cleared, it fills the cell with a formula to use the record above it as a default value if another cell is equivalent. This worked when I first wrote it, but now it seems to break every other time I use it. When assigning the formula it returns a Method Default/FormulaR1C1/Offset failed error message. It seems to be different for each one, each time and I can't figure out what the problem is.
The other problem I'm having is that I wrote a BeforeDoubleClick event to expand or contract any given record, or series of records. this too worked when I initially wrote it, but now is only hiding one row when it should be hiding eight or more. I'm not terribly versed in VBA and totally baffled as to why I'm having these problems. As I side note, any ideas to clean up any of the code and make this run smoother (as ther will be many more series added when complete).
A most of time I'm using VLOOKUP function. I want to call specially this function by pressing custom button (w/o pressing "Insert Function" and choosing VLOOKUP)
when you type in a builtin function in the formula bar such as =DAY(), a small callout box appears below telling you the syntax - in this case "DAY(serial_number)". Is it possible to achieve this for a user defined function?
I have written a VBA program and using in Ms.Excel. The problem is when I try to write the VBA function through the function wizard it works but when I write the function in excel worksheet cell, it doesnt execute. I do not now the reason.
I am trying to use the vlookup function together with an offset function but i am not getting it to work properly.
The situation is as follows:
I have a column E in which i use the vlookup function to find its corresponding value in B which in turn refers to a named range. However, the figure i want the function to return is 2 columns to the right and 2 rows above the value which the vlookup funtion finds in the first column.
I have though of using the offset function, but i cannot figure out how to make this work.
I'm comfortable with the IF statements in excel and not familir with many of the other functions available to me. I am trying to create a character calulator for Elder Scrolls III (Marrowind). So that a person may enter their race, ***, and other choices and their by calculating all starting stats. There are 10 races you can choose from and I can cover 9 of them with the if function (leaving one as if all other options are false). I would like to know if there is a better way such as a drop down list or some way to search an array or anything that would be better suited to search the race cell and return data if it's true. I'm running into the same probably with choosing the constalation (13 choices in this catagory).
I thought to split it two different data fields, by letting you choose from 4 in one cell and the other 9 in a different cell, but realized I don't know how to make it check two different cells for a choice to return it to the display cell without hitting the limitation of the 7 nested funcations in a forumla again.
I am using COUNTIF functions with Defined Name lists to quickly determine if a certain number is on a list. As a backdrop, I am using Chemical Abstract Service (CAS) numbers and attempting to somewhat streamline chemical approval for a small company. CAS numbers are often in the format of XX-XX-X with varied amounts of numbers. One of the defined lists however does not have dashes.
Thus, I am using cell B1 to enter the CAS# once and then for each list having a column to itself with an associated worksheet with a defined name list. Most of the columns have the function =B1 with the conditional formatting of =COUNTIF(definedname,BX) and formatted to turn red if the chemical is on the list. This is working for all of the columns except for the list that needs the dashes removed. For instance, CAS 64-67-1 is put in B1 and cell B5 has the formula =SUBSTITUTE(B1,"-","") which brings the number to 64671 which matches the number in my defined name list. However, the cell will not turn red. What am I missing?
I want a UDF; = OK (f1,f2) each argument being an alternative function. If f1 returns an error message then use f2. Should be easy but I cannot get it to work.
TPR, DISPLAY and FEATURE columns generate a rating based off of an IF function. In the Executed column, I need TPR, FEATURE, DISPLAY to be averaged together...BUT....In I want the average only include columns where there are numbers. For example in row one the eqn would be (1+3+2)/3, but in row 2 the eqn would be (1+1)/2...can I state an average function within an if function? Or what would be the best way to create an eqn for this?? I have thousands of rows to complete and doing it manually is not an option.
0- Did not meet expectations 1- Below expectations 2- Met expectations 3- Exceeded expectationsTPRDISPLAYFEATUREExecuted?Effective?Comments132Coming off of a Dec promotion113111111221
On sheet 1 I have a list of 1000 firstnames On sheet 2 I have a list of 1000 emails,
I need a function that states If a cell in the email column contains a string or value from the names column, it will result in a true statement so that I can separate out the emails that have these peoples first names.
I am trying to return a TRUE or FALSE based on a date in a cell.
for example:
if cell A1 = 07/11/2009
I want A2 to show TRUE or FALSE if A1 is 14 days or more behind todays date.
I have tried stuff like:
=IF(A1=TODAY()-14,"True","False")
but it just always says false. EDIT: I have just noticed that if I change the date in A1 to exactly 14 days behind todays, it returns TRUE. So, it does work. Do I need to add a GREATER THAN in there?
Can a Function give two or more output variables. e.g.
Sub a() x = 5 result = Y(x) End Sub
Function Y (x As Integer) As Integer Dim B B = ... * x Y = ... * B
this will give back Y as a result. But if I want to get 2 or more output variables (let's say I need to get also B into sub) from one function, how should I do that? I need this because function works with large matrix and I want to extract some values appeared in between.
I want to perform a very easy calculation, but i don't want that the calculation gets made if there is a 0 value within in. There are two values who are the main inputs if 1 of those 2 equal zero i don't want the calculation to be made, or when they are both zero. So far i came up with the following:=IF(OR(API167=0,API186=0),0,API167-API186)/(API167+API186)/2 that only works if one of the two values is zero.
Next question is that i want to sum up the row with the values calculated with the formula above, disregarding the zero values. This sum function must be devided by the amount of values which are used as input(so disregarding the zero's)
I am trying to use the OR function within an IF condition. when I use each function seperatly, it works fine. but both functions together always return the value of "B" - as false result, even when the requested cell holds one of the true values.