percentage

Let's say I have an image that is 1920 x 1280. I'm using a slider to scale down the image, which goes from 100% to 0%, where 100% is the original size and 0% is the minimum size. The image can be no smaller than 350 in either height, or width, so 0% should equate to this minimum size. What formula would I use to calculate the new dimensions? If you could explain the logic, that would be helpful. I'm certain this is an SAT question that I failed... var min=Math.min(width,height); var result=Math.max(min * (percentage/100),350); var newHeight=(result/min) * height; var newWidth=(result/min) *

Im a MongoDB noob so please dont judge me if my question is stupid:P Im trying to get some results from MongoDB to create a table that would show percentage statistics of how much do i play a certain game per day of week (all games together per day = 100%). This is my JSON import for the database: [ {"title":"GTA","date":"2017-11-13"}, {"title":"GTA","date":"2017-11-13"}, {"title":"BattleField","date":"2017-11-13"}, {"title":"BattleField","date":"2017-11-13"}, {"title":"BattleField","date":"2017-11-14"} ] Ive written an aggregation that grouped the results by days and counted the total amount

I'm trying to get the distribution of grades for each rank for names in a list of data. However, I can't figure out how to get the proportion/percentage of each grade count over its rank group. Here's an example: df.head() name rank grade Bob 1 A Bob 1 A Bob 1 B Bob 1 C Bob 2 B Bob 3 C Joe 1 C Joe 2 B Joe 2 B Joe 3 A Joe 3 B Joe 3 B I use grade_count = df.groupby(['name', 'rank', 'grade']).['grade'].size()) to give me the count of each grade within its (name,rank) group: name rank grade Bob 1 A 2 B 1 C 1 2 B 1 3 C 1 Joe 1 C 1 2 B 2 3 A 1 B 2 Now for each size calculated, I'd like to get its

How do you calculate a percentage from 2 int values into a int value that represents a percentage(perthousands for more accuracy)? Background/purpose: using a processor that doesn't have a FPU, floating point computations take 100's of times longer. int x = 25; int y = 75; int resultPercentage; // desire is 250 which would mean 25.0 percent resultPercentage = (x/(x+y))*1000; // used 1000 instead of 100 for accuracy printf("Result= "); printf(resultPercentage); output: Result= 0 When really what I need is 250. and I can't use ANY Floating point computation. Example of normal fpu computation:

I'm trying to add percentage labels to a donut chart but have been unsuccessful in plotting a clear representation of percentage values (rounded and not overlapping) ## my data library(ggplot2) col <- c("white", "black", "transparent", "grey", "blue", "yellow", "green", "red", "pink", "orange", "brown") freq <- c(101, 68, 34, 18, 14, 5, 5, 3, 2, 1, 1) ## create data frame colour.df <- data.frame(col, freq) colour.df ## calculate percentage colour.df$percentage = colour.df$freq / sum(colour.df$freq)* 100 colour.df = colour.df[rev(order(colour.df$percentage)), ] colour.df$ymax = cumsum(colour.df

I am pretty new to R... so forgive me. I'm trying to make donut plots using ggplot2. I have modified the code of the post ggplot Donut chart but now I'm not able to add the percentage on the chart. This is my attempt: library(ggplot2) blank_theme <- theme_minimal()+ theme( axis.title.x = element_blank(), axis.title.y = element_blank(), panel.border = element_blank(), panel.grid=element_blank(), axis.ticks = element_blank(), plot.title=element_text(size=14, face="bold") ) dat = data.frame(count=c(319, 442, 239), category=c("University", "High Scool", "Lower")) dat$fraction = dat$count / sum(dat

I am automating an excel spreadsheet using PHP. I have been looking for a way to pragmatically format a cell to a percentage in PHPExcel. I want to change a value like 0.077922078 to 8% Is there a solution for this? Thanks in advance. assuming your cell is A1 .. $objPHPExcel->getActiveSheet()->getStyle('A1') ->getNumberFormat()->applyFromArray( array( 'code' => PHPExcel_Style_NumberFormat::FORMAT_PERCENTAGE_00 ) ); PHPExcel library has predefined only few basic formatting constants. You can actually build your own for virtually any purpose (coloring, formatting decimals & thousands etc).