dataset

问题 I'm trying to format XML from a MySQL query to emulate what a client frontend is expecting for input. I have no control over what the client requires, so I have to match what I've gotten from Wireshark captures. I am not married to the idea of adding columns to the dataset to do this, and I can probably just do a search and replace for the additions to the XML, however, I have a large number of very similar, yet different queries & outputs to write, and I'd prefer to do something that scales

问题 How to bind userControls inside a DataRepeater in Windows Forms c#? I don't want to use this method: http://blogs.msdn.com/b/vsdata/archive/2009/08/12/datarepeater-control-for-windows-forms.aspx but I want to make the binding from a DataSet/DataTable programmatically. Inside the repeater just for tests I put one textbox and one label. Also one UserControl which consists also of two controls: one label and one textbox. So far only first label and textbox are updated but not the usercontrol.

问题 I am trying to create a data set of co-occurrence data where the variable of interest is a software application and I want to simulate an n by n matrix where each cell has a number that says the number of times application A was used with application B. How can I create a data set in R that I can use to test a set of clustering and partitioning algorithms. What model would I use and how would I generate the data in R ? 回答1: n <- 10 apps <- LETTERS[1:n] data <- matrix(0,n,n) rownames(data) <-

问题 I have the following data structure representing movie ids (first column) and ratings for different users for that movie in the rest of columns - something like that: +-------+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ |movieId| 1| 2| 3| 4| 5| 6| 7| 8| 9| 10| 11| 12| 13| 14| 15| +-------+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ | 1580|null|null| 3.5| 5.0|null|null|null|null|null|null|null|null|null|null|null| | 3175|null|null

问题 I'm currently doing the following to use typed datasets in vs2008: Right click on "app_code" add new dataset, name it tableDS. Open tableDS, right click, add "table adapter" In the wizard, choose a pre defined connection string, "use SQL statements" select * from tablename and next + next to finish. (I generate one table adapter for each table in my DB) In my code I do the following to get a row of data when I only need one: cpcDS.tbl_cpcRow tr = (cpcDS.tbl_cpcRow)(new cpcDSTableAdapters.tbl

问题 I want to load my data and do some basic linear regression on it. So first, I need to use VectorAssembler to produce my features column. However, when I use assembler.transform(df) , df is a DataFrame , and it expects a DataSet . I tried df.toDS , but it gives value toDS is not a member of org.apache.spark.sql.DataFrame . Indeed, it is a member of org.apache.spark.sql.DatasetHolder . What am I getting wrong here? package main.scala import org.apache.spark.SparkContext import org.apache.spark

问题 I've got an xml file formatted like this: <items> <item> <itemProperty1>Propeterty1</itemProperty1> <itemProperty2>Propeterty2</itemProperty2> <propertyWithSubProperties1> <subprop1>subProp1</subProp1> <subprop2>subProp2</subProp2> <deeperPropertyWithSubProperties1> <deeperSubProperty1>data</deeperSubProperty1> <deeperSubProperty2>data2</deeperSubProperty2> </deeperPropertyWithSubProperties1> </propertyWithSubProperties1> </item> ...More items </items> I'm trying to use a dataset in c# to

问题 I removed a table from a Linq to SQL DBML file via the designer this morning. After making several changes, I attempted to add the table back to the DBML designer surface and Visual Studio does nothing. When I try to drag the table from the list in Server Explorer, I do not get the arrow indicating that it is attempting a drag and drop operation. I have tried to drag several other tables from server explorer to the designer to no avail. I do not get an error. I also tried updating a DataSet

问题 Having deployed a new build of an ASP.NET site in a production environment, I am logging dozens of data errors every second, almost always with the error "Cannot find table 0." We use datasets and frequently refer to Table[0] , and while I understand the defensive coding practice of checking the dataset for tables before accessing Table[0] , it's never been a problem in the past. A certain page will load fine one second, and then be missing one of its data-driven components the next. Just

问题 I got an issue here. I am trying make a request to a Web Appi: http://www.speedex.gr/getvoutrans/getvoutrans.asmx?WSDL And I am sending a request to insertPodData(); I am using PHP and SOAP. I am succesfull at connecting and giving the correct credentials. However I am not able to send a Dataset (cause I do not know the right way), so i get an empty dataset. Datasets are for .NET lang. So it is kind of tricky with the php. I tried already to send it as an array, i still get an empty result.