Re: Lucene.Net: using NOT operator - C# Discussion Boards

Re: O'Reilly Confused me on classes

PIEBALDconsult20-Jul-11 7:04

PIEBALDconsult

20-Jul-11 7:04

Herboren wrote:
the values aren't actively stored in my variables yet

Yes, they are, why do you think otherwise?

ints are value types.

Re: O'Reilly Confused me on classes

Richard MacCutchan20-Jul-11 7:05

Richard MacCutchan

20-Jul-11 7:05

Time t = new Time(currentTime);

The above code calls the constructor that takes a System.DateTime as input, and copies the values from the DateTime into the new object's variables. So you now have a Time object containing values that correspond to the currentTime object. The next line calls the DisplayCurrentTime() method on the Time object t, which displays the values previously stored.

Does that make sense?

The best things in life are not things.

Re: O'Reilly Confused me on classes

Herboren20-Jul-11 7:07

Herboren

20-Jul-11 7:07

Actually that made perfect sense and your put me back on track thank you. And these are all initialized explicitly, correct? And I can implicitly initialize it but changing 'int Second = 30;' as an initializer, not that I would want to but just to get the understanding of implicit and explicit.

Re: O'Reilly Confused me on classes

Richard MacCutchan20-Jul-11 7:34

Richard MacCutchan

20-Jul-11 7:34

Herboren wrote:
And these are all initialized explicitly, correct?

Yes, statements of the form:

Year = dt.Year;

are taking a value from the input parameter (dt) and allocating them to a variable within the current instance of the Time class; i.e. the object currently being constructed by the constructor.

Herboren wrote:
And I can implicitly initialize it but changing 'int Second = 30;' as an initializer, not that I would want to but just to get the understanding of implicit and explicit.

I'm not sure I understand what you mean here: any statement of the form, variable = expression, is an explicit assignment, and can be placed anywhere, either within one of the class methods, or external to it when the access level of a variable allows. For a further discussion of explicit/implicit take a look here[^].

The best things in life are not things.

Lucene.Net: using NOT operator

NarVish20-Jul-11 4:11

NarVish

20-Jul-11 4:11

Hi,
Don't know whether it is right place to post this. If not, please suggest me the right forum.
I indexed the document using Lucene Indexer.
Each document contains the values for the Level, Parent, Description.

I would like to search the documents based on below conditions,
where Description contains "Ana", Level=0 and Parent not equal to "Move". I wrote the below code to satisfy those conditions

TermQuery qry = new TermQuery(new Term("Level", "0"));
WildcardQuery wQry = new WildcardQuery(new Term("Description", "*Ana*"));
QueryParser parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_29, "Entity",
                    new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29));
Query qry1 = parser.Parse("Parent:NOT Move");

BooleanQuery boolQuery = (BooleanQuery)boolQuery.Combine(new Query[] { qry, wQry, qry1 }); 
boolQuery.Add(query, BooleanClause.Occur.MUST);
boolQuery.Add(wQry, BooleanClause.Occur.MUST);
boolQuery.Add(query3, BooleanClause.Occur.MUST);
hits = searcher.Search(boolQuery, 100);

qry and wQry are working but qry1 is not working. How to query Parent not equal to "Move".
Thanks in advance.

Re: Lucene.Net: using NOT operator

Dave Kreskowiak20-Jul-11 7:14

Dave Kreskowiak

20-Jul-11 7:14

Ask the people you got the library from. It's is extremely unlikely that anyone that has any experience with your exact library is ever going to see your post.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: Lucene.Net: using NOT operator

dmoses4820-Jul-11 9:22

dmoses48

20-Jul-11 9:22

I beleive you just need to use

BooleanClause.Occur.MUSTNOT

instead of

BooleanClause.Occur.MUST

Also don't use the NOT in the qry1.

Re: Lucene.Net: using NOT operator

NarVish20-Jul-11 20:03

NarVish

20-Jul-11 20:03

Thank you, dmoses48. its working

LINQ JOIN

PozzaVecia20-Jul-11 2:58

PozzaVecia

20-Jul-11 2:58

Hi, suppose I have

var A = new[]
           {
               new {Name ="Car", N = 2},
               new {Name ="Bike", N = 100}
           };

           var B = new[]
           {
               new {Name ="Car", N = 10},
               new {Name ="Plane", N = 1}
           };

I would like to to the following using LINQ syntax: Join A nd B getting a total collection summing also N where same objects are the same... to be clear the final output should be:

{Name ="Car", N = 12},
{Name ="Bike", N = 100},
{Name ="Plane", N = 1}

Thanks for your time

Re: LINQ JOIN

Mirko198020-Jul-11 3:38

Mirko1980

20-Jul-11 3:38

Here you go:

var query = from item in A.Union(B)
            group item by item.Name into grp
            select new { Name = grp.Key, N = grp.Sum(t => t.N) };

modified on Wednesday, July 20, 2011 10:46 AM

Re: LINQ JOIN

PozzaVecia20-Jul-11 5:21

PozzaVecia

20-Jul-11 5:21

Suppose now I have many var. So not only two (A and B) but many, let's say A,B,C....
Is it still managable? (I mean a union between many and not anly two)

Re: LINQ JOIN

Pete O'Hanlon20-Jul-11 5:22

Pete O'Hanlon

20-Jul-11 5:22

Why not try it out and see what effect it has?

Forgive your enemies - it messes with their heads

My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

Re: LINQ JOIN

PozzaVecia20-Jul-11 5:27

PozzaVecia

20-Jul-11 5:27

I'm only able to do union between two at time. My question is if I can do between many at the same time.

Re: LINQ JOIN

Pete O'Hanlon20-Jul-11 5:42

Pete O'Hanlon

20-Jul-11 5:42

And still I ask, why not try it out for yourself? You have the basic knowledge now, so it cannot be that hard for you to formulate your own opinion. Still, you can one vote this answer as well because I haven't spoonfed you the answer, rather I've suggested that you should now be able to think for yourself.

Forgive your enemies - it messes with their heads

My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

How to Get Number of Combinations of Polygon

Anubhava Dimri20-Jul-11 0:00

Anubhava Dimri

20-Jul-11 0:00

Hello Everybody,

I have a polygon like :

A.......B...................C
.       .                   .
.       .                   .
D.......E ..................F

and My Starting Point is

and I want to visit all the Points of Polygon.
And The Incoming of A is From B and D and Both.

So Solution For A is :

A <B
                             A < D
                             A < B,D

So pls how can i Generate All the Combinations of this polygon.

Thanks

If you can think then I Can.

Re: How to Get Number of Combinations of Polygon

V.20-Jul-11 1:55

20-Jul-11 1:55

what have you tried yourself?

DateTime Data Problems in Silverlight and C#

Xarzu19-Jul-11 16:41

Xarzu

19-Jul-11 16:41

DateTime Data Problems in Silverlight and C#

Hello Forum.

I am using VISI Fire in Silverlight and C# to produce some data charts. One style of chart allows stacked data to be displayed in colums the xaml code I am using looks like this
[IMG]http://i67.photobucket.com/albums/h292/Athono/xaml.png[/IMG]

The chart i am trying to build is based on a visi fire chart example. if you go to http://www.visifire.com/silverlight_wpf_charts_gauges_gallery.php and look at their stacked examples here http://www.visifire.com/silverlight_stacked_charts_gallery.php you can see the xaml example I am trying to emulate.
http://i67.photobucket.com/albums/h292/Athono/post_this.png

But my chart comes out differently. mine has this odd overlaping date feature

[IMG]http://i67.photobucket.com/albums/h292/Athono/badrepresentation.png[/IMG]

Now, I have carefully stepped through the code and as far as I can tell, I have the same date for each data set pair.
[IMG]http://i67.photobucket.com/albums/h292/Athono/code-1.png[/IMG]

I have stepped through this code and I have made sure that with each value for i, the years and the months for each data pair are exactly the same. So why is my graph so messed up?

Installing Visual Web Developer 2010 Express

Bram van Kampen19-Jul-11 15:51

Bram van Kampen

19-Jul-11 15:51

Hi,

Maybe I'm not in the right forum. If so, accept my apologies and please re-direct me.

I am trying to install 'MS Visual Web Developer 2010 Expres' Actually I first installed Web Matrix, found it crap, and decided on the Next. First un-installed Web Matrix. Tried to install Visual Web Developer 2010 Express, it started with wanting to install SQL Express. Failed First, (After 2 hours) ostensibly because my disk was compressed.(Could that not have been detected early during setup, if that's a problem) Cloned the disk to a Larger One,usinf EaseUS, Undid the compression( as far as I could, went throuhg All Directories)(Some Files could not be Decompressed because they where in Use).

Tried Again. Got a message box: 'Installation Failed\nThe Version of SQL Express you are installing is Older than the version you have.'

Tried to use Windows Installer to uninstall. Started First to Last for SQL Server products,as listed. -:Fails on 'Cannot Uninstall this Component because other components are depending on it.'

Cloned the disk again to another disk, and started manually uninstalling components from the bottom to the Top, using Windows Uninstaller in other following orders, got messages:- To Uninstall This Component, you need XXXAXP DLL.

Rethorical Question, Why does a Microsoft Product not meet the Ms Uninstal/Failure to install specification written by microsoft themselves.

Question2, the Real question,

Where do I go from Here!

any help appreciated

Regards,

Smile | :)

Bram van Kampen

Re: Installing Visual Web Developer 2010 Express

RobCroll20-Jul-11 1:28

RobCroll

20-Jul-11 1:28

Well we are stabbing in the dark now so try installing Web Express on one of the uncomrpessed disks. Sounds like you now have SQL Express installed.

"You get that on the big jobs."

Drawing Map & find countries on Map by C# Application

Mahtab77719-Jul-11 7:00

Mahtab777

19-Jul-11 7:00

Hi,
I want to write this project:
while load the form,the program(in Runtime),draws a Map on form,for exmple:Map of Asia,itself.
The program ask from the user about countries,for example,
Find Russia on the Map!
& the user must click on the map,on Russia.
I don't know where must I start,what algoritm do I use from this program?what namespace?or classes or Methodes?
Please,Gude me!
How do I start & continu & finish this program?
Thanks very much.

Re: Drawing Map & find countries on Map by C# Application

Eddy Vluggen19-Jul-11 9:43

Eddy Vluggen

19-Jul-11 9:43

Mahtab777 wrote:
while load the form,the program(in Runtime),draws a Map on form,for exmple:Map of Asia,itself.

The computer doesn't know how to draw a map of a specific country by itself, that information is not embedded into your PC and will have to be provided by you.

You could import a picture, show it in a PictureBox, and have the user click it. You would than have to translate the location of the pixel to a known country. The easiest way to do that is by coloring different regions with different colors; once you know the pixel where the user clicked, you know what color, and hence, what region.

Bastard Programmer from Hell Suspicious | :suss:

Re: Drawing Map & find countries on Map by C# Application

Mahtab77719-Jul-11 17:05

Mahtab777

19-Jul-11 17:05

Hi Thanks for your guideing,
I used this way that you suggest,
but,I don't want to use this way,
I want that Program,itself,draws map on form,& finds out that the user where clicked,

Re: Drawing Map & find countries on Map by C# Application

Pete O'Hanlon19-Jul-11 21:25

Pete O'Hanlon

19-Jul-11 21:25

Them you are going to have to draw the map, and maintain a list of polygons that match the outlines of the regions. Then, when the user clicks on the map, you do a point in polygon check to see if they've clicked in the region.

Forgive your enemies - it messes with their heads

My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

Re: Drawing Map & find countries on Map by C# Application

V.20-Jul-11 2:01

20-Jul-11 2:01

if you want to draw it yourself, you'll need a data source that contains all the elements to draw, mostly these are area's (polygons), lines (polylines) and dots, each area or line or dot has certain charactiristics like water, road, ... if you have all that you'll also need to find a way to link all elements and to zoom in/out the map.

In short (I probably forgot to mention most of the stuff anyway) you'll need to find a provider for the geographical stuff. For a fee they'll provide you with some assemblies you can use as well as the database with all information in it (and with updates if necessary).

hope this clarifies things for you.

Re: Drawing Map & find countries on Map by C# Application

Mahtab77720-Jul-11 6:52

Mahtab777

20-Jul-11 6:52

Hi,
Thanks very much!
I want to use the Region class for Drawing Map on form & for Drawing countries on Map,
"Region" can helps me for this program?
Are there another ways for this program?
Are there a classes or components for creating & Drawing Map?

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