I need to solve about 450 excel sheets for my project.
The spreadsheet has X and Y data and curve is plotted. I need to split the curves into 3 parts based on slope change.
I can do it manually but I need an excel Macro which does this work.
A sample is attached : Excel forum-Lab data.xlsx
I have a data set (Set#1) that consists of a positional rank (1-240) and a dollar value ($46-$1) for each positional rank. It's not a straight line set.
DataSet.JPG
What I need to do is take that curve and apply it to another data set (Set#2) (1-240) and assign a dollar value ($46-$1) to each positional rank.
A "corner cutting" way of doing it would be an Index/Match to simply carry over the dollar value from (for example) #45 from my Set#1 to #45 in my Set#2. This could work reasonably well with data sets of the same size, but mine aren't always the same size, so I need to apply the curve itself. I
I would like to use excel to plot a growth curve. I would like it to plot the points that correlate to my data without connecting them by a line. I would then like to give excel a formula and have it plot that line on the graph.
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View 1 Replies View RelatedHere's the spreadsheet I am talking about : [URL]
So as you can see each row = one day divided in 2 cycles of 12 hours : every 12 hours the cat gets a new injection of insulin (the columns "U" being the number of units of insulin the cat receives)
Now I want to turn this sheet into two different curves that would look like these : [URL]
As you can see the first graph shows data based on days (x) and insulin dose (y), while the second curves shows data based on days (x), and blood glucose values (y). This is basically the only way we could clearly see how the cat's disease is evolving over a long period of time.
If he had just started to take all these values from his cat I guess it would be simple to do, but since he already has a lot of data entered in his spreadsheet, I was wondering if I could use this data (and not write each number in a new document), to make things a little more simple and to avoid mistakes.
I am using Excel 2007. I have two sets of data. y-series is 58.61, 58.66, 58.71 and 58.76. x-series is 0.8313, 0.8309, 0.8305 and 0.8301.
I am trying to fit a quadratic function to this data. When I plot a curve and fit a trendline I get the coefficients for the equation ax^2+bx+c
a=1.3939e-11
b=-125
c=162.5225
The plotted line seems to fit the data fairly well.
However, I want to use the linest function and I am using the formula:
=INDEX(LINEST(B2:B5,A2:A5^{1,2}),1,1)
I change the index column number as appropriate to get the coefficients:
a=-75.23775
b=0
c=110.603763
The coefficients from linest seem to be way out. how I can get the output from linest to be the same as the trendline?
I have created a scatterplot with a trendline and I need a formula to represent the trendline so it can be applied to separate results. How I can create a formula and an R2 value?
View 1 Replies View RelatedI tried to record setting a trendline to 100% transparent but this action doesn't seem to record.
View 2 Replies View RelatedI have been doing some statistical anaylsis in excel and have been using trendlines within scatter charts quite a bit.
I know excel can display the equation of the line as well as the r-squared on the chart. Is there any way to get the values for the trendline to appear in a cell next to the corresponding chart data? Of course, I can simply enter the formula myself that is given on the chart, but I am wondering if there is a way to do it automatically.
I have included the data below along with the trendline value that I calculated by manually entering the formula from the scatter chart.
Code:
YXTrendline Value
$78.990.53$79.79
$78.730.53$79.73
$80.550.52$80.88
[Code]....
I need VBA to copy the values from a treadline output box on a chart to a new sheet. The macro recorder produces the code below, but I need to make the 5th line generic so that the code will apply to any workbook. The code below will not run without the "Windows("Test.xls").Activate" statement, which restricts the code to a workbook of a specifc name (Test.xls). How can I make this run for any workbook name?
Sub CopyTreadlineData()
Sheets("A").Select
ActiveSheet.ChartObjects("Chart 1").Activate
ActiveChart.SeriesCollection(1).Trendlines(1).DataLabel.Select
ActiveWindow.Visible = False
Windows("Test.xls").Activate
Sheets("Beta").Select
Range("B15").Select
ActiveSheet.Paste
End Sub
is it possible to export a trendline equation from a graph to a cell, or at least to export the coefficients? If yes, how?
View 4 Replies View RelatedI'm in the middle of designing a sheet that (amongst many other things) takes the equation of a graph trendline, pastes it, and calculates the various values along it. I can do it by hand, but when I try to record a macro, it doesn't register that I've highlighted the equation and hit copy. Here's the code I'm working with:
Sheets("Graphs").Select
ActiveSheet.ChartObjects("Chart 1").Activate
ActiveChart.SeriesCollection(1).Trendlines(1).DataLabel.Select
Selection.Copy
ActiveWindow.Visible = False
Windows("Copy of HRA Design calculator1.xls").Activate
Sheets("Binder @ max. stability").Select
Range("A1").Select
ActiveSheet.paste
The problem is line 4 - it can't copy because the text isn't selected.
I'm trying to determine the percentage rate of change in a trendline. I've got a sales chart with 90 days worth of sales figures. I can see that the trendline is trending down, but I'm not sure exactly how much.
If you take the first data point in a trendline and subtract it from the last data point and then divide that by the first it should give you the percent change. Excel must be able to do that math for you but I can't even figure it out to save my life. I can't even figure out how to display the first and last data point much less the "rate" of change I'm looking for.
i have a workbook that contains a series of worksheets. the workbook is a master document list. the first worksheet contains no data. the remaining worksheets are arranged so that A1 has the document number, A2 contains the document title, and A3 contains the review date. Id like to create a search macro that can search for the string entered into textbox1. if this is a number, the macro should search A1:A50 of all but the first worksheets in the workbook, and if its text, the macro should search B1:B50 of all but the first worksheets.
the macro should then select the cell containing what was searched. then id like the macro to prompt me and ask if id like to modify the reviewed date to todays date. d like to be prompted to continue searching for other records if they exist, and after that loop has finished to set the focus back to the search textbox.
i have a function in a cell (that works) to extract coefficients from a range of cells in a workbook:
VB: =INDEX(LINEST(CP25:CP27,CQ25:CQ27^{1,2}),1)}
i have variables for cp25:cp27 and cq25:cq27 already defined in my vba code. the values for these in the case i am working on are as follows (returns 110.5):
cp25 = 560
cp26 = 570
cp27 = 580
cq25 = .414
cq26 = .479
cq27 = .536
1) how to do this function in VBA only - this is part of a UDF and cannot have any helper cells
2) how to refer to 560,570,580 as a 'range'. is there a way to put these six variables into my ranges for later processing?
All of the google searches i have deal only with linear regression, taking from existing graphs, or say to just use the function i have above.
I have tried
VB:
Var = Application.WorksheetFunction.LinEst(Sheets("references").Range("CP25:CP27"), Sheets("references").Range("CQ25:CQ27^{1,2}"), 1)
[COLOR=#333333][/COLOR]
but return #value! errors. when i remove the ^{1,2} portion, i do return a value but it is incorrect (returns 160), what is the correct syntax for adding in the ^{1,2}? if you do that would be fantastic, but brings me back to issue #2 in that i need to refer to my variables in the vba code and not this range (as they will eventually be going away).
One of my three active brain cells isnt functioning today, so I need some help.
I am trying to use the "split" function but cant seem to get it working.
The variable sWbName is "MOT 4506667 C 142 #JN #SN.xls".
I have an excel spreadsheet that has over 10 thousand rows and is 40+ Mb in size. It is giving me timeout errors when trying to import it into Joomla 2.5. Therefore, I need a way that I can easily split the file into 5 smaller files. Here are the column headers: titlemetadescmetakeyaliascategory_pathstateintrotextaccess
I tried doing it manually but is said the cell sizes were different...
I have a large number of product descriptions of varying lengths (column A) which I need to split into a maximum of 3 columns depending on the total length of the description. Each description in column A is less than 90 characters. Each column (B, C & D) can only be a maximum of 30 characters including spaces and commas etc. Also words cannot be split. Below is a sample of the result I would expect with the description in column A and the 3 extracted columns in B, C and D. I am using Excel 2003.
View 4 Replies View RelatedI am running 2 audits on aspects of patient care. The first audit records a unique number that identifies the patient, and then a series of answers on demographics, and other stuff.
The second audit also records the unique number, and collects some other data on the particular patient at a later point in time (medication usage, levels of pain etc).
So in theory both audits will collect different information on the same patients. In practice, some patients will be missed and there won't be matching data sets. The order of collection won't be the same either, ie Audit 1 might be in the order of Patient 1,2,3,4 etc but Audit 2 might be patient 2,4,1,3
For various reasons these two data collection tools are not linked, and I end up with a spreadsheet for audit 1 and a spreadsheet for audit 2.
I need to merge these so that I can see all of the data for a particular patient at a glance, and where the gaps are, and apply some statistics to it etc. I could sort both lists by the unique audit number so that they are in order, and then copy blocks of data over from one sheet to the next, but there will be records missing, i might make a mistake with the alignment, and I'm sure there must be a better way.
I am using Excel 2010. Each audit case has about 50 columns of data for Audit 1 and 30 columns for Audit 2 . There will be ~20 new records (Rows) created each week that I want to progressively merge.
I have a few dates and one Total value. I need to distribute this Total Value in such a way so I can get the same shape S curve (Date vs Value).
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I am looking for a function [or method] to calculate a polynomial curve fit. I can do it on a graph with the existing graph and chart tools, but I need to calculate it myself. Does such software exist somewhere in my Excel 2007 package, or can anyone recommend a freeware program? I am hesitant to download an unknown, un-recommended add-in.
i am getting some data via RS 232 port and plotting it straight to excel, which comes out to be in forms of waves you can say sine waves, now i need to calculate area under the curve, say like if i highlight some area it will automatically calculate the area, or if i select two points on the curve it will calculate the area. please help me out i am really stuck at this part.
View 9 Replies View RelatedI'd like to apply a curve to a column of student exam grades and have the curved grades displayed in the adjacent column. Here is how I'd like to curve:
I like to make a linear function out of two coordinate pairs.
First Pair (x1,y1) = (Highest Exam Grade, 99) = (H,99)
Second Pair (x2,y2) = (Class Exam Average, Desired Exam Average) =(C,D)
Slope = (99-D)/(H-C) = m
Linear Function = Y-y = m(X-x) = Y-99=m(X-H)
Each student grade would = "Y" i.e. Y=m(X-H)+99
How I can find a max in an xy chart curve fit?
View 9 Replies View RelatedDoes anyone know of a statistical formula that would create a normal growth curve?
For example. Let's assume that I want to forcast growth from January through December. I know that in January I will have 100 units. In December, I will have 1,000 units. Is there a formula to predict the the units in Feb-Nov (using a normal growth curve)?
I am trying to calculate the equation of a curve which best fits some data. On the x-axis is date and y-axis the readings. The curve is quadratic, so on the chart I am fitting a 2nd order polyomial and displaying the equation. To prove that the equation the trendline gives me is reasonable, I am applying the equation on the x parameter to get the y parameter estimate and looking to see the error between predicted and actual - see attached.
The equation and the output from it are clearly rubbish, even though on the graph the trendline is a reasonable fit - see attached. Has anyone any ideas why? I think it has something to do with using a date on the x-axis but no idea why. Is there a way to correct for this? I also tried using the following I to calculate the coefficients which came up with a reasonable forecast (although linest should only be used for linear data): =LINEST(C3:C15,B3:B15^{1,2,3})
Excel VBA 2010.
I have this problem:
e.g Cells ""
C2 - 128.50 g
C3 - 211.01 g
C4 - 198.50 g
C5 - 179.34 g
I need to split the text into
Cell "C2" = 128.50 and Cell "D2" = g
Cell "C3" = 211.01 and Cell "D2" = g
and so forth
I wanted to avoid using delimited method with space and induce an automated method to format every cell of Column "C" one by one.
