assign

问题 I was wondering whether it is possible to assign a value to an HTML text box and protect it. What I mean is make it´s content unmodifiable, so that when the form gets submitted im "sure" it was this value which was submitted. BTW I realize the easier way would be not to "listen" fot this input and just assign it but it would come in handy to be able to do what´s stated above. I hope the question is clear enough, please ask for any needed clarification. Thanks in advance! EDIT: I was

问题 I am struggling with variable labels of data.frame columns. Say I have the following data frame (part of much larger data frame): data <- data.frame(age = c(21, 30, 25, 41, 29, 33), sex = factor(c(1, 2, 1, 2, 1, 2), labels = c("Female", "Male"))) # I also have a named vector with the variable labels for this data frame: var.labels <- c(age = "Age in Years", sex = "Sex of the participant") I want to assign the variable labels in var.labels to the columns in the data frame data using the

问题 Each iteration of the loop creates a new plotx. This works fine as when I run print(plotx) it produces a different graph. I then used assign to call each plot "plotx1","plotx2" etc..to save each plot as a separate name. When I then plot the names plots they are all identical to Y=c BUT the y axis is correctly labelled with the original Y for the loop! Whats going on? How do I correct this? dat = data.frame("d"= rep(c("bla1","bla2","bla3"),3),"a" = c(1:9), "b"= c(19:11), "c"=rep(c(3,2,2),3)) X

问题 What I want to do: Iterate over values on one page to check for match on another page and if a match is found take a value from 2nd page same row but different column. I've been trying now for quite some time. I'm new to VBA-scripting / Excel and might be approaching the problem incorrectly, hence why I'm asking here! My code so far: Sub InsertData() ScreenUpdating = False Dim wks As Worksheet Dim subSheet As Worksheet Set subSheet = Sheets("Sheet4") Dim rowRangeSub As Range Dim LastRowSub As

问题 I want to create a batch file to assign keyboard shortcuts. For example, how can I launch Internet Explorer using the key Alt + 5 ? 回答1: using NirCmd http://www.nirsoft.net/utils/nircmd.html you can create files shortcuts, and assign an hot key to these file shotrcut See here the help of NirCmd: http://www.nirsoft.net/utils/nircmd2.html#using shortcut [filename] [folder] [shortcut title] {arguments} {icon file} {icon resource number} {ShowCmd} {Start In Folder} {Hot Key} Creates a shortcut to

问题 I want to assign content of the src tag of image to a variable on clicking on the image through JS: Eg- HTML <div id="img"> <img src="image1.jpg"> <img src="image2.jpg"> </div> <span id="source"/> JS ??? I want to assign the image source of the clicked image to a variable and then display the source on HTML through span. This all should happen when I click the image. And the source that is going to be assigned to variable should be of the clicked image. How can I do it? Thanks in advance. 回答1

问题 This feels like this should have a simple solution but it eludes me. I have an existing set of data frames, called set1, set2, and set3. I want to merge each of them - separately - with another data frame, like so: a <- merge(bigdata, set1, by = keyID) b <- merge(bigdata, set2, by = keyID) c <- merge(bigdata, set3, by = keyID) ... I want to reference the existing 'sets' on the fly (in a loop), so I made this object: nam <- paste('set', i, sep = '') Of course, if I do this: > nam I get this: >

问题 I need to assign data field (component of another field symbol) to field-symbol in a several places of code. For the sake of reusability I decided to encapsulate this code in procedure, but I cannot understand how to pass field-symbols into this procedure. LOOP bseg ASSIGNING <bseg> ... PERFORM assigning USING <bseg> CHANGING <wrbtr>. ... ENDLOOP. FORM assigning USING <bseg> TYPE bseg CHANGING <wrbtr> TYPE bseg-wrbtr IF ... some logic here ASSIGN <bseg>-wrbtr TO <wrbtr>. ELSE ASSIGN <bseg>

问题 `function(trans,initprob,N)' { BrokerPosition <- c("BP", "IP", "SP") mysequence <- character() firstposition <- sample(BrokerPosition, 1, rep=TRUE, prob=initprob) mysequence[1] <- firstposition for (i in 2:N) { prevposition <- mysequence[i-1] probabilities <- trans[prevposition,] BPosition <- sample(BrokerPosition, 1, rep=TRUE, prob=probabilities) mysequence[i] <- BPosition } return(mysequence) } This is a function made to simulate Markov chain , but whenever I run it I get the error no

问题 I implemented a class to handle some external functions (e.g of another DLL). This functions gives me an integer I can use as a handle. Here is the important part of my code: MyClass { public: MyClass() { handle = getHandlefromExternalFunction(); } ~MyClass { if(handle>0) freeHandleFromExternalFunction(handle); } MyClass& operator=(MyClass& other) { freeHandleFromExternalFunction(handle); handle = other.handle other.handle = 0; //Is this a bad idea? } private: int handle; } In my main