Excel 2007 is driving me nuts. I have several charts set up that I refresh periodically against some data in a SQL database. However, every time I refresh them, Excel bumps any absolute ranges I have for the charts to view this data by the amount of new records returned from the query.
The data is time related (I have a record for each minute of the day), and I want the chart (line chart) to be fixed in size... instead, Excel wants it to dynamically change, and thus it adds the extra rows to my named ranges.
Is there a way to prevent Excel from updating absolute named ranges when new data from a data source is returned? I hope this makes sense.
How are you defining your named ranges? I'm assuming your are just using cell references, if so it may be worth looking at the offset function, particularly if you are dealing with fixed size ranges (e.g. minutes in a day).
For example, if you had column headers in the first row, your minutes were in column A and you had exactly 1 row for each minute your offset formula would look like:
OFFSET(A2,0,0,1,1440)
and is defined as
OFFSET(StartCell, OffsetRows, OffsetCols, Width, Height)
Because any of the values within the arguments can also be formulas, OFFSET is a very useful function in defining ranges.
Related
I have a large complex spreadsheet with ~200 tabs. It opens/loads very slowly (upto 5 minutes) due to multitudes of formula calculations. I am trying to optimize the formulas so the spreadsheet will open/load faster.
One of the most frequent calculations is to multiply about 60 cells in each tab by a variable in 'Sheet1!B4' (Sheet 1, cell B4). I expect this value to change maybe once in a year or so, which would require updating all 200 tabs in at least 60 cells each.
Will it be better to hard-code the value, and take the hit for updating it once a year in all the affected cells in all the tabs?
Or is it ok to reference it in some way, which does not impact the performance, and preferably makes it faster?
Here are the three options I am considering:
Hardcoded value: =countif(C$10:C$30,$B60) * 10
Reference cell: =countif(C$10:C$30,$B60) * Sheet1!:B4
Use Named Range of a single cell: =countif(C$10:C$30,$B60) * PARAMETER_VAL
where PARAMETER_VAL is a named range referencing Sheet1!B4
Which of the above would be the fastest?
Is there any other way to make it faster, that I may be missing?
I don't think that any of the three alternatives will have significative difference on the spreadsheet performance because the reference / named ranges point to a cell with a fixed value.
Related Q&A
Measurement of execution time of built-in functions for Spreadsheet
My problem is as follows, I have a workbook with (to begin with) 2 worksheets, the first (called WIP) acts as a form of data entry, each new occurrence of the BoM requires an insertion of 4 columns which happens to the left of the existing columns. At the same time a new worksheet is created based on a copy of the existing second worksheet (called FitOut) which pulls various bits of a data from the first worksheet based mainly upon the version of the BoM selected and the supplier referenced.
Of course adding new columns to the WIP sheet causes the functions, arrays and formulas in the sheets to automatically update, I had used a quick workaround by using some code to hold and then paste the new occurrences data into the worksheet which is created at the start of the macro, however the formulas have become slightly complex (due to the need to look for the previous 4 occurrences and return values based on specific cell locations) that the 256 character limit has been completely shot ( I think I'm over 800 on some bits).
I've very limited as to the layout of the WIP sheet, and the sheet needs to be fairly idiot proof (hence macros, buttons etc) but it needs to run well...
ANy and all suggestions/help would be much appreciated.
I have put an example of the formula I am trying to use, if it can be condensed further pleas let me know:
=IFERROR(IF($C$1='WIP'!$U$1,(INDEX('WIP'!$A$1:$X$2500,SMALL(IF('WIP'!$U$1:$U$2500=$A$1,ROW('WIP'!$U$1:$U$2500)),ROW(6:6)),COLUMN('WIP'!$C:$C))),(IF($C$1='WIP'!$X$1,(INDEX('WIP'!$A$1:$AA$2500,SMALL(IF('WIP'!$X$1:$X$2500=$A$1,ROW('WIP'!$X$1:$X$2500)),ROW(6:6)),COLUMN('WIP'!$C:$C))),(IF($C$1='WIP'!$AA$1,(INDEX('WIP'!$A$1:$AD$2500,SMALL(IF('WIP'!$AA$1:$AA$2500=$A$1,ROW('WIP'!$AA$1:$AA$2500)),ROW(6:6)),COLUMN('WIP'!$C:$C))),(INDEX('WIP'!$A$1:$AG$2500,SMALL(IF('WIP'!$AD$1:$AD$2500=$A$1,ROW('WIP'!$AD$1:$AD$2500)),ROW(7:7)),COLUMN('WIP'!$C:$C)))))))),"")
The best way I can explain my problem is by showing a few screenshots.
I need to turn data like this:
[
Into something that displays like this:
After Data
There are multiple part numbers in the file, and I need the macro to take all the data from a matching part number and transform the data into what is displayed in the second image. All the part numbers are grouped with their data together, so it wouldn't need to run the loop through the top every single time, but adding to the entries with each new piece of data. Something also needs to be done for the years as well, because the way the data is presented, is in a range of years, and I need an entry for each year in that range.
Additional Information:
I am using this data for prep for category data for a BigCommerce site, that is working with a year/make/model plugin on the site, to create a vehicle lookup system. Thus in order for the user to look up their vehicle accurately the categories need to be listed the way they are in the second picture, which needs to be the result of the macro.
I thank anyone who takes the time to look into this, it will cut down the time I spend doing this manually by a huge amount.
You can do this with a formula (without actual VBA):
In cell F2 write: ="YMM/"&C2&"/"&D2&"/"&E2&";"
In cell F3 write: =F2&"YMM/"&C3&"/"&D3&"/"&E3&";"
drag down the formula in F3 until the last row.
The last row will contain the entire string of all vehicles.
I just noticed you may have duplicate values. You can use the built in Remove Duplicates feature to remove those before using the above technique.
I have a excel sheet which we may keep adding rows/ deleting them.
And I have an average value present in some cell.I would want the excel formula to identify if there is text in another column to average the columns
So now if I insert another row, I have to manually update the average formula.
Is there a way to have a formula which check if column A is not empty, it should consider the data in column G for the average
There's a lot of approaches to this. My current favourite is a CELL:INDEX(...) expression. For instance, to find the last populated cell in the first continuously populated range between B1 and B5000, I would use (probably as a named range) $B$1:INDEX($B$1:$B$500,MATCH(TRUE, $B$1:$B$500="", 0)-1).
This approach is great because it's non volatile, so it shouldn't bog your worksheet down. It might be vulnerable to $B$500 gradually shrinking if you're only ever deleting rows, though. Alternatives are referencing the whole column ($C:$C), but that's usually dog slow in modern excel, or using OFFSET which never shrinks, but is volatile.
I coded a VBA script in Excel which adds new data into a Datasheet with previous information. Before doing that, the new data is copied into a provisional Datasheet. To prevent duplicates, I create an additional column and do a VLOOKUP of IDs. If the ID from the new imported data is already in the Datasheet with the old data, this row is marked as duplicated and will be deleted. The "non-duplicated rows" are then copied into the final Datasheet, where all the data is stored.
Right now I use a column reference (A:A) in the VLOOKUP and I don´t know if maybe this is the reason why the VBA script needs every day more resources and time to run. When I coded for the first time, I did the test with no more than 4,000 rows in the original Datasheet and 4,000 rows in the imported data. The macro was done after 90 seconds. Right now, it needs more than 5 minutes and the Datasheet with data is just 40,000 rows large, while the new data is always around 4,000 rows.
Should I dynamically reference the range in the VLOOKUP instead of using A:A or it doesn't matter in terms of speed?
As mentioned in my comment, there certainly is a way to accomplish this task using VBA, but sometimes the simpliest solution is best. I would reccomend added all 40K records each time and using the "Remove Duplicates" function under the "Data" ribbon using the column that holds your unique value.