numeric

I need to show only the numeric reCaptha instead of character strings. Is it possible? If yes, please give the procedure. Like Google's Street view It is not possible at the moment. Your only options for customisation are basically just skins/themes. If such an option were available, it would also not be in the options passed through on the client side as a bot could just request it as an easier alternative. Even the plugins only generate javascript to display the widget. So the option would have to be server side, associated with your key and there are no options to do this when you create

In Mathematica a vector (or rectangular array) containing all machine size integers or floats may be stored in a packed array. These objects take less memory, and some operations are much faster on them. RandomReal produces a packed array when possible. A packed array can be unpacked with the Developer function FromPackedArray Consider these timings lst = RandomReal[1, 5000000]; Total[lst] // Timing Plus @@ lst // Timing lst = Developer`FromPackedArray[lst]; Total[lst] // Timing Plus @@ lst // Timing Out[1]= {0.016, 2.50056*10^6} Out[2]= {0.859, 2.50056*10^6} Out[3]= {0.625, 2.50056*10^6} Out

Is it possible for a pattern match to detect if something is a Numeric ? I want to do the following: class DoubleWrapper(value: Double) { override def equals(o: Any): Boolean = o match { case o: Numeric => value == o.toDouble case _ => false } override def hashCode(): Int = value ## } But of course this doesn't really work because Numeric isn't the supertype of things like Int and Double , it's a typeclass. I also can't do something like def equals[N: Numeric](o: N) because o has to be Any to fit the contract for equals . So how do I do it without listing out every known Numeric class

I have a mixed class dataframe (numeric and factor) where I am trying to convert the entire data frame to numeric. The following illustrates the type of data I am working with as well as the problem I am encountering: > a = as.factor(c(0.01,0.02,0.03,0.04)) > b = c(2,4,5,7) > df1 = data.frame(a,b) > class(df1$a) [1] "factor" > class(df1$b) [1] "numeric" When I try and convert the entire data frame to numeric, it alters the numeric values. For example: > df2 = as.data.frame(sapply(df1, as.numeric)) > class(df2$a) [1] "numeric" > df2 a b 1 1 2 2 2 4 3 3 5 4 4 7 Previous posts on this site

I have a string that is being generate from a formula, however I only want to use the string as long as all of its characters are numeric, if not that I want to do something different for instance display an error message. I have been having a look round but am finding it hard to find anything that works along the lines of what I am wanting to do. I have looked at NSScanner but I am not sure if its checking the whole string and then I am not actually sure how to check if these characters are numeric - (void)isNumeric:(NSString *)code{ NSScanner *ns = [NSScanner scannerWithString:code]; if (

I recently had a problem in which everytime I read a csv file containing a table with values, R read it as a list format instead of numeric. As no thread provided me the entire answer for my situation, once I was able to make it run I decided to include here the script that worked for me in hope that it is useful to someone. Here it is, with some description and some options in case you need it: (1) Read the data from a csv file. Here the file has no header, so I put F, if yours have a header, then change it to T. data <- read.csv("folder_path/data_file.csv", header=F) (1.a) Note: If you get a