I'm adding 300 rows to a table dynamically and it's taking about 1.75 seconds to add the rows and at least another 1 to 1.5 seconds to render. I know this might sound like I am being picky but overall it's a 3+ second delay to show the table when this happens and the calcs behind that table execute really quickly.
I'm using a simple TableRowElement row = tBody.addRow();
and then row.addCell() for about ten columns of data. The data is coming from a List of Map objects.
If this is normal, then is there a way I can get the rows to render as they are created to sort of "speed up" the process from the user's point of view?
Thanks!
Related
I have a tracking spreadsheet to track dry streak calcs for certain drops from a boss in a video game. I want to be able to easily see my dry streaks by having the sheet count the amount if boss kills since the last drop.
I have the following:
=IF(B2="",COUNTBLANK(B2:INDEX($B2:B,MATCH(FALSE,($B2:B=""),0))),"")+1
where column A is the boss kill count, and column B is filled if a drop is received.
the above formula works to an extent of what i want, but the order is upside down. I'd also like it to only show the "count since last drop" when a cell in column B is filled., rather than every cell showing it.
Example sheet
If column A is a sequence of numbers as depicted in the sample you can use formula 1 and formula 2 is stand-alone just based on column B. Please test them out.
formula 1:
=let(a,filter(A2:A,B2:B="drop"),byrow(A2:A,lambda(z,IF(offset(z,,1)="drop",z-xlookup(offset(z,-1,),a,a,,-1),))))
formula 2:
=let(a,filter(row(B:B)-1,B:B="drop"),byrow(B2:B,lambda(z,IF(z="drop",row(z)-1-xlookup(row(offset(z,-2,)),a,a,,-1),))))
Here you have another option that instead of looking for values it just makes a cumulative count.
=SCAN(0,B1:INDEX(B:B,ROWS(B:B)-1),LAMBDA(a,v,IF(v="drop",1,a+1)))
B1:INDEX(B:B,ROWS(B:B)-1) is a replacement for OFFSET so it is a bit more economic in resources
Then you can just hide the values when B is empty:
=INDEX(IF(B2:B="","",SCAN(0,B1:INDEX(B:B,ROWS(B:B)-1),LAMBDA(a,v,IF(v="drop",1,a+1)))))
I’m trying to emulate Minesweeper in Google Sheets, and for this I want to create a second map adjacent to the first with all of the correct values already in it. To randomize bomb position, I need a list of random numbers or cells(cells would be preferable). However, I cannot figure out how to do this without ending up repeating numbers. The result would ideally be a vertical array of cell coordinates. Thank you!
Answer
The following formula should produce the result you desire:
=SORTN(FLATTEN(MAKEARRAY(10,10,LAMBDA(row,col,ADDRESS(row,col)))),20,,RANDARRAY(100),)
In =MAKEARRAY, change the first 10 to adjust how many rows to randomly choose from, or the second 10 to adjust how many columns to choose from. The value in =RANDARRAY must be equal to the product of the number of rows and the number of columns. (e.g. in the above example, 10*10=100).
Change the 20 to adjust how many randomly chosen values to return.
Explanation
=MAKEARRAY is used to generate an array of every possible row and column combination. It accepts a =LAMBDA, which in this case is just the =ADDRESS function. The first two arguments of =MAKEARRAY determine how large the array should be, which is why changing them adjusts how many rows/columns to randomly pick from.
Then, the result of =MAKEARRAY is squashed into a single column using the =FLATTEN formula.
Finally, the entire thing is sorted randomly using =SORTN combined with =RANDARRAY. =SORTN also limits the number of results that are returned dependent on its second argument, which is why changing it adjusts how many results are returned.
If you want information on how to "freeze" the value of =RANDARRAY so it doesn't recalculate each time you change something, check out this question by player0.
Functions used:
=MAKEARRAY
=LAMBDA
=ADDRESS
=FLATTEN
=SORTN
=RANDARRAY
Here's how it looks.
Hi. I'll try to be as specific as possible about this :)
I'm making a Google Sheet page similarly to a game character progression, that will automatically fill up based on data from other sheets: specifically, these "EXP" bars fill up with values based on the hidden cell A5.
For instance, the cells from D5 to BA5 represent LV1.
As the function shows, every time the value in A5 reaches an even number (for LV1, it's all even numbers from 2 to 100), one of the slots will fill up with a number, that with conditional formatting, will change the color of the cell and make it look like an actual exp bar filling up.
I'm using the function =COUNTIF(A5,">=2") and manually changing it to ">=4", ">=6" etc until ">=100" for the first bar. The second bar will have its 50 cells with all even numbers from ">=102" to ">=200".
So, to get to the question: is there an array formula that facilitates the process of filling a great amount of these bars with functions, without changing them all manually? Even automating *some *of this process would be great. Besides it being tedious, it leaves a lot of room for human error.
Thank you in advance to whoever's got an answer.
P
I haven't tried much as at the moment I am very confused by the vast amount of options array formulas provide. I have 48h of experience in the matter.
I suggest you to use the values of columns and rows here as helpers to do calculations. If you know that every column adds 2 and every row adds 100 you can set a formula like this for the whole range (select the whole range and add just one rule of conditional formatting):
=$A$5>((Column(D5)-3)*2+(Row(D5)-5)*100))
You use $symbol to make A5 steady and D5 value will "move" to each cell for conditional formatting, so you don't have to make an ARRAYFORMULA for this
I have made a bar chart which aggregates my data, but is there any way I can split each bar based on the data it is aggregating - similar to how a stacked bar chart would look?
Here is a bad artists impression (thick blue lines mine). The idea is that it's important to know from looking at the graph if I sold 5 at £1, or 1 at £5.
Ideally this would work even if the price for each item is variable, but that is not essential (eg: if there is a 'hack' with hardcoding Apple = 3, I can live with that.)
I'm also fine inputting helper columns etc, within reason, but I would want to be able to easily continue to add things to the list on the left without having to add new helper columns each time (calculated ones are fine, of course.)
Thanks in advance.
UPDATE: With thanks to Kin Siang below, I ended up implementing a slightly modified version of their solution, which I am posting here for completeness.
I added a very large (but finite) number of helper columns to the right, with a formula in each cell which would look for the nth occurrence of the item in the main list (wrapped in an iferror to make the unused cells blank).
=iferror(index(FILTER($A:$B,$A:$A=$D2),E$1,2))
Theoretically it could run out of space one day, but I have made it suitably large that this should not be an issue. It has the advantage over the other solution that I do not need to sort or otherwise manipulate the input range and can continue trickling in data to the main list and have the chart automatically update.
Yes, it is possible to display the chart in your case, however need some data transpose in order to do so, let me show you the example with dataset
Assuming this is your original data:
First sort the data by alphabet, and enter this formula in new column
=if(G39="",1,if(G40=G39,I39+1,if(G40<>G39,1)))
Next add new column for categorical purpose, by using concatenate function
="Price"&I40
In the transform data for chart purpose, enter this formula to split all price into different row, different column for different product
=sumifs($H$40:$H$47,$G$40:$G$47,$A41,$J$40:$J$47,B$40)
After that i select stack bar chart and ensure the price in under series, in case in 23 will have some problem to set price at series correctly, you can use 33 data create stack bar chart and update the data range again, it will work also
Here is the cute chart you expected, accept if help :)
*When certain fruit has less price record, it is advised to fill in 0, as the data table need in same column (see the orange price 3), although I didnot test if blank
i tried looking at capture, yield, content_for don't think any of these is the solution.
i'm trying to create a reports, calculating and looping column by column, row by row.
But i need to display an average for each of the column, but i will not be able to calculate the average not until i have the totals for each of my rows.
by the time I have finished showing all the totals, the HTML table has been rendered. now without using Javascript, is there anything i can do like a "placeholder" that i can put in the table that i can reference and at a later stage?
Sounds like you are trying to do these calculations in the view. I would suggest doing it in the controller looping through your data. Try keeping out heavy calculations from views.