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  • Using data from a dataset in styles with Mapnik

    - by Alex King
    I've setup Mapnik to connect to a PostGIS database, and display geometry. I'd like to have a column in my database called opacity, and use it as the opacity for that row of geometry when Mapnik renders it. So far, I've only found information on how to display text from the database, and how to use filters to display different styles when database values are within parameters. Nothing about how to use the values directly inside of a style or layer though - is this possible?

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  • If I create a transient property in the model, isn't this managed by core data then?

    - by mystify
    Just to grok this: If I had a transient property, lets say averagePrice, and I mark that as "transient" in the data modeler: This will not be persistet, and no column will be created in SQLite for that? And: If I make my own NSManagedObject subclass with an averagePrice property, does it make any sense to model that property in the xcdatamodel file? Would it make a difference if I would simply create a property in my subclass and not model that in the entity? (I think: yes, it doesn't matter at all ... but not sure)

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  • how to find the data key on checkedchanged event of checkbox in a list view in asp.net?

    - by subodh
    I am using a list view inside that in item template i am using a label and a checkbox. I want that whenever user clicks on the check box the value should be updated in a table.i am using a datakeys in listview.on the basis of datakey value should be updated in the table query is string updateQuery = "UPDATE [TABLE] SET [COLUMN] = " + Convert.ToInt32(chk.Checked) + " WHERE PK_ID =" + dataKey + " "; also i want some help in displaying the result as it is inside the table.means if the value for column in table for a particular pkid is 1 then the checkbox shoul be checked. here is the code snippet <asp:ListView ID="lvFocusArea" runat="server" DataKeyNames="PK_ID" onitemdatabound="lvFocusArea_ItemDataBound" > <LayoutTemplate> <table border="0" cellpadding="1" width="400px"> <tr style="background-color: #E5E5FE"> <th align="left"> Focus Area </th> <th> Is Current Focused </th> </tr> <tr id="itemPlaceholder" runat="server"> </tr> </table> </LayoutTemplate> <ItemTemplate> <tr> <td width="80%"> <asp:Label ID="lblFocusArea" runat="server" Text=""><%#Eval("FOCUS_AREA_NAME") %></asp:Label> </td> <td align="center" width="20%"> <asp:CheckBox ID="chkFocusArea" runat="server" OnCheckedChanged="chkFocusArea_CheckedChanged" AutoPostBack="true"/> </td> </tr> </ItemTemplate> <AlternatingItemTemplate> <tr style="background-color: #EFEFEF"> <td> <asp:Label ID="lblFocusArea" runat="server" Text=""><%#Eval("FOCUS_AREA_NAME") %></asp:Label> </td> <td align="center"> <asp:CheckBox ID="chkFocusArea" runat="server" oncheckedchanged="chkFocusArea_CheckedChanged" AutoPostBack="true" /> </td> </tr> </AlternatingItemTemplate> <SelectedItemTemplate> <td> item selected</td> </SelectedItemTemplate> </asp:ListView> help me.

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  • How can you replicate each row of an R data.frame and specify the number of replications for each ro

    - by wkmor1
    df <- data.frame(var1=c('a', 'b', 'c'), var2=c('d', 'e', 'f'), freq=1:3) What is the simplest way to expand the first two columns of the data.frame above, so that each row appears the number of times specified in the column 'freq'? In other words, go from this: >df var1 var2 freq 1 a d 1 2 b e 2 3 c f 3 To this: >df.expanded var1 var2 1 a d 2 b e 3 b e 4 c f 5 c f 6 c f

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  • php mysql timestamp

    - by user342391
    I need to track the date and time a user was created in my mysql database. I have column called 'created' and the data type as TIMESTAMP. The problem is that when a user changes their password or other information the TIMESTAMP value changes. How can I set this to not change????

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  • Datable.Select sort expression

    - by xyz
    Hi, I have datatable with column name tag and 100 rows of data.I need to filter this table with tag starting with "UNKNOWN". What should my sortexpression for datatable.select be ? I'm trying the following. Datarow[] abc = null; abc = dtTagList.Select(string.format("tag='{0}'","UNKNOWN")) How can I achieve tag startswith 'UNKNOWN' in the above code ?

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  • True or False: Good design calls for every table to have a primary key, if nothing else, a running i

    - by Velika
    Consider a grocery store scenario (I'm making this up) where you have FACT records that represent a sale transaction, where the columns of the Fact table include SaleItemFact Table ------------------ CustomerID ProductID Price DistributorID DateOfSale Etc Etc Etc Even if there are duplicates in the table when you consider ALL the keys, I would contend that a surrogate running numeric key (i.e. identity column) should be made up, e.g., TransactionNumber of type Integer. I can see someone arguing that a Fact table might not have a unique key (though I'd invent one and waste the 4 bytes, but how about a dimension table?

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  • How to split records per hour in order to display them as a chart?

    - by Axel
    Hi, I have an SQL table like this : sales(product,timestamp) I want to display a chart using Open Flash Chart but i don't know how to get the total sales per hour within the last 12 hours. ( the timestamp column is the sale date ) By example i will end up with an array like this : array(12,5,8,6,10,35,7,23,4,5,2,16) every number is the total sales in each hour. Note: i want to use php or only mysql for this. Thanks

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  • How do I write a Oracle SQl query for this tricky question...

    - by atrueguy
    Here is the table data with the column name as Ships. +--------------+ Ships | +--------------+ Duke of north | ---------------+ Prince of Wales| ---------------+ Baltic | ---------------+ In the Outcomes table, transform names of the ships containing more than one space, as follows: Replace all characters between the first and the last spaces (excluding these spaces) by symbols of an asterisk (*). The number of asterisks must be equal to number

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  • WPF DataGrid, Help with Binding to a List<X> where each X has a Dictionary<Y,object> property.

    - by panamack
    I'm building an application which helps someone manage an event and works with data originating from Excel. I want to use the WPF Toolkit DataGrid to display the incoming data but can't guarantee how many Columns there are going to be or what information they will contain. I'd like to have an Info class that stores column information and have each Visitor at my Event own a Dictionary that uses shared references to Info objects for the keys. Here's the general gist: public class Info{ public string Name{get;set;} public int InfoType{get;set;} } public class Visitor{ public Dictionary<Info,object> VisitorInfo {get;set;} } public class Event{ public List<Visitor> Visitors{get;set;} public Event(){ Info i1 = new Info(){ Name = "ID", InfoType = 0};// type 0 for an id Info i2 = new Info(){ Name = "Name", InfoType = 1};// type 1 for a string Info i3 = new Info(){ Name = "City", InfoType = 1}; Visitor v1 = new Visitor(); v1.VisitorInfo.Add(i1, 0); v1.VisitorInfo.Add(i2, "Foo Harris"); v1.VisitorInfo.Add(i3, "Barsville"); Visitor v2 = new Visitor(); ... this.Visitors.Add(v1); this.Visitors.Add(v2); ... } } XAML: <!-- Window1.xaml --> ... <local:Event x:Key="MyEvent"/> ... <wpftk:DataGrid DataContext="{StaticResource MyEvent}" ItemsSource="{Binding Path=Visitors}" /> Disappointingly, DataGrid just sees a collection of Visitors each having a VisitorInfo property and displays one column called VisitorInfo with the string "(Collection)" once for each Visitor. As a workaround I've created a ListTVisitorToDataTableConverter that maps Infos to DataColumns and Visitors to DataRows and used it like this: <wpftk:DataGrid DataContext="{StaticResource Event}" ItemsSource{Binding Path=Visitors, Converter={StaticResource MySmellyListTVisitorToDataTableConverter}}" /> I don't think this is good though, I haven't started trying to convert back yet which I guess I'll need to do if I want to be able to edit any data! How can I do better? Thanks.

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  • Grid 960 bug in Internet Explorer 8?

    - by mg1075
    If you go to the "Variable Grid System" generator and have: column width = 20 number of columns = 12 and gutter width = 60 ...the system provides a content width of 900 and a full width of 960. http://www.spry-soft.com/grids/ Now, this is all fine and dandy in Firefox, Chrome, and even IE6, but when you load those settings in IE8, you end up with the actual full width as 1000px, not 960px. Has this issue been encountered before?

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  • Jquery's a FREE grid display

    - by mmcgrail
    I have been using Flesigrid for my CMS and I like it except there are some things I think it could do better like get the column headers from the ajax results rather then in the setup of the flexigrid or having the ability to change the buttons on reload things of that nature. I've been considering a mod of the plugin though I'm not sure i really want to do that. But the question is ... is there something that might be better that I somehow missed when I was looking for grid display ?

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  • Insert into Table from #tempTable fails

    - by AJ
    I am simply taking the data from a Table and insert it into #tempTable then delete the data, and insert it back to the table. I get "Insert Error: Column name or number of supplied values does not match table definition." Error. Here are the lines I am running. SELECT * INTO #tempTable FROM dbo.ProductSales SELECT * FROM #tempTable DELETE FROM dbo.ProductSales INSERT INTO dbo.ProductSales SELECT * FROM #tempTable Any Idea?

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  • SQL Server: How to get a subitem of sp_helplanguage ?

    - by Quandary
    Question: I can get the SQL Server database language by querying: SELECT @@language And I can get further info via EXEC sp_helplanguage How can I query for a column of sp_helplanguage where name= @@language I do SELECT * FROM sp_helplanguage WHERE name='DEUTSCH' but that obviously doesn't work. What's the correct way to query it ?

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  • Multiple conditions on select query

    - by stats101
    I have a select statement and I wish to calculate the cubic volume based on other values within the table. However I want to check that neither pr.Length_mm or pr.Width_mm or pr.Height_mm are NULL prior. I've looked at CASE statements, however it only seems to evaluate one column at a time. SELECT sa.OrderName, sa.OrderType, pr.Volume_UOM ,pr.Length_mm*pr.Width_mm*pr.Height_mm AS Volume_Cubic ,pr.Length_mm*pr.Width_mm AS Volume_Floor ,pr.Length_mm ,pr.Height_mm ,pr.Width_mm FROM CostToServe_MCB.staging.Sale sa LEFT JOIN staging.Product pr ON sa.ID = pr.ID

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  • Convert historic dates from utc to local time

    - by Espo
    I have an sql table with data like this: | theDate (datetime) | theValue (int) | ---------------------------------------- | 2010-05-17 02:21:10 | 5 | | 2009-03-12 04:11:35 | 23 | | 2010-02-19 18:16:53 | 52 | | 2008-07-07 22:54:11 | 30 | The dates are stored in UTC format in a datetime column, how can I convert them to local time (Norway)? Remember that the UTC-offset is not the same all year because of winter/summer-time.

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  • iPhone app sales report help...

    - by Moshe
    I am having trouble understanding my iPhone app sales report. Which column says how many downloads I have? Which report should I use? I am asking here because only developers would understand what I am talking about. Nobody else sees these reports.

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