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• How to change the band height dynamically?

  - by Kumar

  Is it possible to modify the height of detail band dynamically in jasper report? Because in my application i need to create pdf document.I have used one main document inside detail band of that main document i used one subreport. Sub report will take java bean as data source. This java bean return a list of field. So if we fixed the size of band then some time all values are not stretch in the document. Is it possible to change the detail band dynamically.

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• Using recode in R

  - by celenius

  I'm trying to use 'recode' in R (from the 'cars' package) and it is not working. I read in data from a .csv file into a data frame called 'results'. Then, I replace the values in the column 'Built_year', according to the following logic. recode(results$Built_year, "2 ='1950s';3='1960s';4='1970s';5='1980s';6='1990s';7='2000 or later'") When I check results$Built_year after doing this step, it appears to have worked. However, it does not store this value, and returns to its previous value. I don't understand why. Thanks. (at the moment something is going wrong and I can't see any of the icons for formatting)

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• JLayeredPane versus Container layering

  - by Gili

  JLayeredPane allows one to stack multiple Components on top of one another using JLayeredPane.add(Component, Integer). Components in higher "layers" display on top of Components in lower "layers". Container.add(Component, int) provides a similar mechanism whereby Components with lower indexes display on top of Components with higher indexes. Please note that the first mechanism uses Integer and the second mechanism uses int. Also, one renders high values on top of low ones, and the other does the opposite. Do not mix the two :) My question is: what's the point of using JLayeredPane when Container already provides the same mechanism? Does one layer components better than the another? UPDATE: There is also Container.setComponentZOrder(Component, int) to consider.

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• convolution in R

  - by user236215

  I tried to do convolution in R directly and using FFTs then taking inverse. But it seems from simple observation it is not correct. Look at this example: # DIRECTLY > x2$xt [1] 24.610 24.605 24.610 24.605 24.610 > h2$xt [1] 0.003891051 0.003875910 0.003860829 0.003845806 0.003830842 > convolve(h2$xt,x2$xt) [1] 0.4750436 0.4750438 0.4750435 0.4750437 0.4750435 # USING INVERSE FOURIER TRANSFORM > f=fft(fft(h2$xt)*fft(x2$xt), inv=TRUE) > Re(f)/length(f) [1] 0.4750438 0.4750435 0.4750437 0.4750435 0.4750436 > Lets take the index 0. At 0, the convolution should simply be the last value of x2$xt (24.610) multiplied by first value of h2$xt (0.003891051) which should give convolution at index 0 = 24.610*0.003891051 = 0.09575877 which is way off from 0.4750436. Am I doing something wrong? Why is the values so different from expected?

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• Not able to update contact name in emulator 2.1

  - by Rishabh

  Hi, I am tring to update name of existing contact in android 2.1 emulator with the following code but always getting "java.lang.IllegalArgumentException: Emplty values" Exception. ContentValues contactValues = new ContentValues(); contactValues.put(People.NAME, "rishabh"); getContentResolver().update(UpdateContactUri, contactValues, null, null); UpdateContactUri is the uri of existing contact with id 4. It is working on emulator 1.6 but not on 2.1. One more thing i need to ask how can i access indivisual fields of Name(first, middle, last) and Address(Street, city, state, zip, country) in 2.1

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• CKEditor Modal Issues.

  - by RavenHursT

  So I'm using CKeditor inside of a jQueryUI dialog. The issue I'm having is when you click on a button like the "link" button, the modal that pops up, won't let me type anything into it's inputs. I can change the values of the pull downs, I can drag the modal around the screen, and I can click on the buttons. But when I attempt to type into the text inputs, nothing happens. Has anyone else come across this? If so, did they find a solution? Thanks! Maybe this has something to do with it? http://dev.jqueryui.com/ticket/4309 But I'm using 1.7.2...

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• geom_tile heatmap with different high fill colours based on factor

  - by Michael

  I'm interested in building a heatmap with geom_tile in ggplot2 that uses a different gradient high color based on a factor. The plot below creates the plot where the individual tiles are colored blue or red based on the xy_type, but there is no gradient. ggplot() + geom_tile(data=mydata, aes(x=factor(myx), y=myy, fill=factor(xy_type))) + scale_fill_manual(values=c("blue", "red")) The plot below does not use the xy_type factor to choose the color, but I get a single group gradient based on the xy_avg_value. ggplot() + geom_tile(data=mydata, aes(x=factor(myx), y=myy, fill=xy_avg_value)) Is there a technique to blend these two plots? I can use a facet_grid(xy_type ~ .) to create separate plots of this data, with the gradient. As this is ultimately going to be a map (x~y coordinates), I'd like to find a way to display the different gradient together in a single geom_tile map.

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• Does DB2 have an "insert or update" statement?

  - by Mikael Eriksson

  From my code (Java) I want to ensure that a row exists in the database (DB2) after my code is executed. My code now does a select and if no result is returned it does an insert. I really don't like this code since it exposes me to concurrency issuses when running in a multi-threaded environment. What I would like to do is to put this logic in DB2 instead of in my Java code. Does DB2 have an "insert-or-update" statement? Or anything like it that I can use? For example: insertupdate into mytable values ('myid') Another way of doing it would probably be to allways do the insert and catch "SQL-code -803 primary key already exists", but I would like to avoid that if possible.

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• Sharing view logic in Django

  - by Jeremy B.

  I've begun diving into Django again and I'm having trouble finding the parallel to some common concepts from my life in C#. While using .NET MVC I very often find myself creating a base controller which will provide a base action implementation to take care of the type of stuff I want to do on every request, like retrieving user information, getting localization values. Where I'm finding myself confused is how to do this in Django. I am getting more familiar with the MVT concept but I can't seem to find how to solve this scenario. I've looked at class based views and the generic views yet they didn't seem to work how I expected. What am I missing? How can i create default logic that each view will be instructed to run but not have to write it in each view method?

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• IOS where to put the configuration of facebook sdk

  - by Carol Smith

  I am trying to integrated my IOS 7 application with Facebook SDK I following this official tutorial https://developers.facebook.com/docs/ios/getting-started which states Configure the .plist Follow these three steps: Create a key called FacebookAppID with a string value, and add the app ID there. Create a key called FacebookDisplayName with a string value, and add the Display Name you configured in the App Dashboard. Create an array key called URL types with a single array sub-item called URL Schemes. Give this a single item with your app ID prefixed with fb. This is used to ensure the application will receive the callback URL of the web-based OAuth flow. The finished .plist should look something like this: My question is where to put these values? They already put this image, maybe it helps you to answer me Edit The problem that I don't have any plist file in my framework in xcode and I can't add a new one because if i did, I would have to add all the variables that you see in the image but the tutorial just stated about some of them

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• Adding ivars to NSManagedObject subclass

  - by The Crazy Chimp

  When I create an entity using core data then generate a subclass of NSManagedObject from it I get the following output (in the .h): @class Foo; @interface Foo : NSManagedObject @property (nonatomic, retain) NSString *name; @property (nonatomic, retain) NSSet *otherValues; @end However, in my .m file I want to make use of the name and otherValues values. Normally I would simply create a couple of ivars and then add the properties for them as I required. That way I can access them in my .m file easily. In this situation would it be acceptable to do this? Would adding ivars to the .h (for name and otherValues) cause any unusual behaviour in the persistance & retrieval of objects?

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• C++: set of C-strings

  - by Nicholas

  I want to create one so that I could check whether a certain word is in the set using set::find However, C-strings are pointers, so the set would compare them by the pointer values by default. To function correctly, it would have to dereference them and compare the strings. I could just pass the constructor a pointer to the strcmp() function as a comparator, but this is not exactly how I want it to work. The word I might want to check could be part of a longer string, and I don't want to create a new string due to performance concerns. If there weren't for the set, I would use strncmp(a1, a2, 3) to check the first 3 letters. In fact, 3 is probably the longest it could go, so I'm fine with having the third argument constant. Is there a way to construct a set that would compare its elements by calling strncmp()? Code samples would be greatly appreciated.

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• NSSortDescriptor for NSFetchRequest sorting unexpectedly

  - by E-Madd

  My entity has a property (sortOrder) that is of the type Decimal(NSDecimalNumber) but when I execute a fetch request using that property as a key, I get back results in a seemingly random order. If I output the value of the property I get really strange values until I get it's intValue. Example: The first run produces this result. The first value is the raw value of the property. The second is the intValue, the actual value of the property when I created the object - or at least I thought. 85438160 10 74691424 20 Second run... 85333744 10 85339168 20 Third... 85263696 20 85269568 10 What the hell?

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• xsl with javascript

  - by Vignesh

  I've a file with xml data. And I want to generate a report out of it. I tried to integrate xsl with java script, but can I get a handle of individual data elements in xsl and pass it on to a java script function. Lets say <value>true</value> is in the xml and I want to pass it on to a javascript function while doing something like this in xsl. <xsl:for-each select="/valgroup"> <xsl:value-of select="value"/> </xsl:for-each> The alternative is to parse the xml in java script and get the values, I've got little idea of how to integrate it with xsl. Are there any java script libraries. I've seen my libraries that run on servers(AJAXSLT), but I need something that runs locally. I'm a new to xslt, so consider this a worthy question.

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• Can I use array_push on a SESSION array in php?

  - by zeckdude

  I have an array that I want on multiple pages, so I made it a SESSION array. I want to add a series of names and then on another page, I want to be able to use a foreach loop to echo out all the names in that array. This is the session: $_SESSION['names'] I want to add a series of names to that array using array_push like this: array_push($_SESSION['names'],$name); I am getting this error: array_push() [function.array-push]: First argument should be an array Can I use array_push to put multiple values into that array? Or perhaps there is a better, more efficient way of doing what I am trying to achieve?

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• Resizing an Binarized image in C#

  - by mouthpiec

  Hi, I have the following code to resize a Binarized image (hence pixel value is 0[black] or 255[white]) with the following code Bitmap ResizedCharImage = new Bitmap(newwidth, newheight); using (Graphics g = Graphics.FromImage((Image)ResizedCharImage)) { g.CompositingQuality = CompositingQuality.HighQuality; g.InterpolationMode = InterpolationMode.HighQualityBilinear; g.SmoothingMode = SmoothingMode.HighQuality; g.PixelOffsetMode = PixelOffsetMode.HighQuality; g.DrawImage(CharBitmap, new Rectangle(0, 0, newwidth, newheight), new Rectangle(0, 0, CharBitmap.Width, CharBitmap.Height), GraphicsUnit.Pixel); } The problem that I am having is that when resizing (i am enlarging the image) some of the pixel values become 254, 253, 1, 2 etc. I need that this do not occur. Is this possible, maybe by changing one of the Graphins properties?

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• Nullables? Detecting them

  - by Aren B

  Ok, im still a bit new to using nullable types. I'm writing a reflecting object walker for a project of mine, im getting to the point where im setting the value of a reflected property with the value i've retrieved from a reflected property. The value i've retrieved is still in object form, and it dawned on me, since i want my object walker to return null when it can't find something, (I thought about throwing an exception, but i want this to soft-fail when something's wrong). Anyway, some of the values im setting/getting are decimal bool etc... so it dawned on me that i should just NOT set a non-nullable value, but I realized I straight up don't know how to tell decimal from decimal? Is it enough to key on if the Type of the property im setting is inherited from ValueType?

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• Passing big multi-dimensional array to function in C

  - by kirbuchi

  Hi, I'm having trouble passing a big array to a function in C. I declare: int image[height][width][3]={}; where height and width can be as big as 1500. And when I call: foo((void *)image,height,width); which is declared as follows: int *foo(const int *inputImage, int h, int w); I get segmentation fault error. What's strange is that if my values are: height=1200; width=290; theres no problem, but when they're: height=1200; width=291; i get the mentioned error. At 4 bytes per integer with both height and width of 1500 (absolute worst case) the array size would be of 27MB which imo isn't that big and shouldn't really matter because I'm only passing a pointer to the first element of the array. Any advice?

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• Implementing a two-way communication between Microsoft Dynamics CRM and 3rd party app

  - by CxDoo

  I need to implement a bi-directional communication between Microsoft Dynamics CRM and a 3rd party server. The ideal scenario is as follows: User tries to create an entity in CRM In pre-create hook a 3rd party library function is called (or web service or whatever), filled with relevant info, which tries to create the respective entity on the server If the call fails, creation fails in CRM If the call succeeds, the entity is created in the CRM AND additional fields are filled with return values from the call More specifically, I want to do something like this when user tries to create a new entity instance: try { ExternalWebService.CreateTrade(ref TradeInfo info) //this was initialized on the external server myCRM_Trade_Entity.SerialNo = info.SerialNo; CreateNew(myCRM_Trade_Entity); } catch (whatever) { fail; } What would be the suggested way to do this? I am new to Dynamics, have read about Workflows and Plugins but am not sure how should I do this properly.

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• Iterating anchors in jquery doesn't seem to work...

  - by bala3569

  Hai i am generating page numbers based on currentpage and lastpage using jquery ... Here is my function and as i am newbie i dont know how it can be done... function generatePages(currentPage, LastPage) { if (LastPage <= 5) { var pages = ''; for(var i=1;i<=5;i++) { pages += "<a class='page-numbers' href='#'>" + i + "</a>" } $("#PagerDiv").append(pages); } if (LastPage > 5) { var pages = ''; for (var i = 1; i <= 5; i++) { pages += "<a class='page-numbers' href='#'>" + i + "</a>" } $("#PagerDiv").append(pages); } } I want the result to be like this If it is the first page If it is in the middle, If it is the last page, I have the lastPage and currentPage values please help me out getting this...

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• C++: A variation of priority queue

  - by Helltone

  I need some kind of priority queue to store pairs <key, value>. Values are unique, but keys aren't. I will be performing the following operations (most common first): random insertion; retrieving (and removing) all elements with the least key. random removal (by value); I can't use std::priority_queue because it only supports removing the head. For now, I'm using an unsorted std::list. Insertion is performed by just pushing new elements to the back (O(1)). Operation 2 sorts the list with std::sort (O(N*logN)), before performing the actual retrieval. Removal, however, is O(n), which is a bit expensive. Any idea of a better data structure?

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• C language preprocessor behavior

  - by khanna_param

  There are different kind of macros in C language, nested macro is one of them. Considering a program with the following macro #define HYPE(x,y) (SQUR(x)+SQUR(y)) #define SQUR(x) (x*x) Using this we can successfully compile to get the result. As we all know the C preprocessor replaces all the occurrence of the identifiers with the replacement-string. Considering the above example I would like to know how many times the C preprocessor traverses the program to replace the macro with the replacement values. I assume it cannot be done in one go.

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• Weighted Average with LINQ

  - by jsmith

  My goal is to get a weighted average from one table, based on another tables primary key. Example Data: Table1 Key WEIGHTED_AVERAGE 0200 0 Table2 ForeignKey LENGTH PCR 0200 105 52 0200 105 60 0200 105 54 0200 105 -1 0200 47 55 I need to get a weighted average based on the length of a segment and I need to ignore values of -1. I know how to do this in SQL, but my goal is to do this in LINQ. It looks something like this in SQL: SELECT Sum(t2.PCR*t2.LENGTH)/Sum(t2.LENGTH) AS WEIGHTED_AVERAGE FROM Table1 t1, Table2 t2 WHERE t2.PCR <> -1 AND t2.ForeinKey = t1.Key; I am still pretty new to LINQ, and having a hard time figuring out how I would translate this. The result weighted average should come out to roughly 55.3. Thank you.

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• Getting an unexpected "?" at the end of a Registry GetValue in C#

  - by Wilhelm Peraud

  Hi, I use the Registry class to manage values in the Registry on Windows Seven in C#. Registry.GetValue(...); But, I'm facing a curious behavior : Every time, the returned value is the correct one, but sometimes, it is followed by an unexpected "?" When I check the Registry, (regedit), the "?" doesn't exist. I really don't understand from where this question mark come from. Could someone help me please ? Info : - C# - 3.5 framework - windows 7 64 bits (and i want my application to work on both 32 and 64 bits systems) Thank you in advance, Wilhelm

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• is there a such thing as a randomly accessible pseudo-random number generator? (preferably open-sour

  - by lucid

  first off, is there a such thing as a random access random number generator, where you could not only sequentially generate random numbers as we're all used to, assuming rand100() always generates a value from 0-100: for (int i=0;i<5;i++) print rand100() output: 14 75 36 22 67 but also randomly access any random value like: rand100(0) would output 14 as long as you didn't change the seed rand100(3) would always output 22 rand100(4) would always output 67 and so on... I've actually found an open-source generator algorithm that does this, but you cannot change the seed. I know that pseudorandomness is a complex field; I wouldn't know how to alter it to add that functionality. Is there a seedable random access random number generator, preferably open source? or is there a better term for this I can google for more information? if not, part 2 of my question would be, is there any reliably random open source conventional seedable pseudorandom number generator so I could port it to multiple platforms/languages while retaining a consistent sequence of values for each platform for any given seed?

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