decimal

问题 I am working on a question from swirl, r Programming Environment 12 Data Manipulation. I cannot figure out how to get r to give me the right number of digits after the decimal place. My code: titanic_4 <- titanic %>% select(Survived, Pclass, Age, Sex) %>% filter(!is.na(Age)) %>% mutate(agecat = cut(Age, breaks = c(0, 14.99, 50, 150), include.lowest = TRUE, labels = c("Under 15", "15 to 50", "Over 50"))) %>% group_by(Pclass,agecat,Sex) %>% summarize(N=n(), survivors = sum(Survived))%>% mutate

问题 In the SSRS my report is displayed fine I have the following scenario: I am passing a parameter ShowDecimal . If the value of the ShowDecimal is Y then decimals should be displayed in the report. Catch is, if the value is like 1 it should display it as 1 , if the value is like 1.10 then the value should be displayed as 1.10. If the ShowDecimal is N then do not show the decimals. I have added condition in the format like: =IIF(Parameters!ShowDecimal.Value="Y", "#,##0.##", "#,##0") In the

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 10 months ago . So, as we all know, 0.1 + 0.2 is equivalent to 0.30000000000000004 . I've got an application which will be used at a point of sell to collect money, and I don't want to deal with the nightmare of floating point arithmetic. My options, as I see them, are a) using integers

问题 I need to display decimal values in DataGridView if (dgvClients.SelectedRows.Count != 0) { DataGridViewRow row = dgvClients.SelectedRows[0]; row.Cells["NetAccountValue"].Value = info.DecimalValue; } I need to format value up to given digits after decimal separator. The problem is that cell Value property stores reference to decimal in my case. When displayed decimal.ToString() is called and default decimal.ToString() produces unformatted string with lots of digits. One way is to create string

问题 How to convert decimal presentation of an ip address to 32bit integer value in java? I use InetAddress class and getLocalHost method to obtain an IP adress: public class getIp { public static void main(String[] args) { InetAddress ipaddress; try { ipaddress=InetAddress.getLocalHost(); System.out.println(ipaddress); } catch(UnknownHostException ex) { System.out.println(ex.toString()); } } } Than I should convert the result to 32bit integer value and than to string, how do I do that? Thanks!

问题 I am trying to read a number from a Cell (this number changes so I have referenced the cell) and then copy it to a new sheet. There are no issues with the reading or copying. The issue I have is that the number that is being read from another cell doesn't work with decimal numbers. I can read cells with all whole numbers and copy their respective rows but just not decimals. I have tried a work around solution that rounded the numbers to whole numbers but later found this just wont work for

问题 Not understanding this: Number returned from DataReader: 185549633.66000035 We have a requirement to maintain the number of decimal places per a User Choice. For example: maintain 7 places. We are using: FormatNumber(dr.Item("Field"), 7, TriState.false, , TriState.True) The result is: 185,549,633.6600000. We would like to maintain the 3 (or 35) at the end. When subtracting two numbers from the resulting query we are getting a delta but trying to show these two numbers out to 6,7,8 digits is

问题 Can anyone explain the best logic / method for incrementing floating, decimal numbers ? For example, if we assume starting decimal number is 2.0, so the next items should automatically get number accordingly say, 2.01, 2.02, 2.03, ....., 2.09, 2.10, 2.11.. etc. But what is the starting number is 2.1, so what would be the next sequence : Is it ? 2.11, 2.12, 2.13, 2.14, ..... 2.19, 2.20 etc...? I is logically correct? I am confused. Please help. 回答1: It depends entirely on what the application

问题 Environment : Visual Studio 2008 Professional Edition Could Anyone suggest how to fix this errors? I am trying to build program of hexadecimal to decimal conversion but gets some error cases like, 1] C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\malloc.h(198) : error C2065: '_ALLOCA_S_MARKER_SIZE' : undeclared identifier 2] C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\malloc.h(208) : error C2065: '_ALLOCA_S_MARKER_SIZE' : undeclared identifier 3] C:\Program

问题 I'm trying to find a fast way to remove zero decimals from number values like this: echo cleanNumber('125.00'); // 125 echo cleanNumber('966.70'); // 966.7 echo cleanNumber(844.011); // 844.011 Does exists some optimized way to do that? 回答1: $num + 0 does the trick. echo 125.00 + 0; // 125 echo '125.00' + 0; // 125 echo 966.70 + 0; // 966.7 Internally, this is equivalent to casting to float with (float)$num or floatval($num) but I find it simpler. 回答2: you could just use the floatval function