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• SSRS 2005 Matrix and border styles when exporting to XLS

  - by Mufasa

  The Matrix in SSRS (SQL Server Reporting Services 2005) seems to have issues with certain the border styles when exporting to XLS (but not PDF or web view; maybe other formats, not sure?). For example: Create a matrix and set the Matrix border style to Black Solid 1px, but all 4 of the cells to have a border style of Black None 1px. When viewed via the ASP.NET control, it looks correct. But after export to XLS, it creates borders around all of the header cells (column and row headers, and the top left cell), and even the right most data column. But all the cells in the middle of the report correctly have no border set. Update: If the Matrix borders are set to None, then the borders on the cells don't show up in XLS. So, how do you set an outer border around the Matrix, but not have it apply the 'all sides' border to every cell that touches the edge of the Matrix when exported to Excel?

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• WPF Window Drag/Move Boundary

  - by Sentax

  Hi everyone, just curious if you know of any way to setup a drag boundary for a window? It would be nice to have these properties: Me.MinLeft = 10 Me.MinTop = 10 Me.MaxLeft = 150 Me.MaxTop = 150 Those are made up properties, btw, which would be nice to have. I know I could probably setup a timer to fire ever 10th of a second and check the left and top and then move it back if it's over. But it would be more elegant to have the window act like it hit a wall and can't go any farther, like moving to the edge of the screen or something similar. Edit: There seems to be some confusion somewhere, the point I'm trying to make is in the paragraph above, dragging, not re-sizing.

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• Graph theory in python

  - by Dan

  I was wondering how people deal with graph theory in python? How is a graph stored? Are there libraries for this? For example how would I input a graph and then find its Chromatic polynomial? Or its girth? Or the number of unique spanning trees? How about problems that involve edge weight like salesman problems? I don't need all of these answered, I'm just looking for a method or tool set that will be able to help me approach solve problems like this. Thanks, Dan

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• iPhone SDK: How to centre content in a UIScrollView during setZoomScale?

  - by Russell Quinn

  I'm using a UIScrollView to show photos. If they are zoomed out so they are smaller than the scroll view in one dimension then the content is centred using contentInset and contentOffset. This all works fine for scrolling and manual zooming. However, if I use setZoomScale (with animated YES) then when zooming out the scroll view sets the top left edge to 0,0 during the animation and then snaps it back afterwards. It seems like the zoom animation ignores the contentInset and contentOffset settings. Does anyone have any idea how to overcome this problem? Thanks, Russell.

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• Windows gadget in WPF - show while "Show desktop" is activated

  - by Jannick

  Hi I'm trying to create a "gadget" like application using WPF. The goal is to get the same behavior as a normal Windows 7 gadget: No task-bar entry Doesn't show up when you alt+tab windows NOT always on top, applications can be on top Visible while performing 'Aero Peek' Visible while using 'Show desktop' / Windows+D I've been able to accomplish the first four goals, but have been unable to find a solution to the fifth problem. The closest I've come is by using the utility class from http://stackoverflow.com/questions/75785/how-do-you-do-appbar-docking-to-screen-edge-like-winamp-in-wpf, but this turns the app into a "toolbar", thereby banishing applications from the part of the screen where my gadget GUI is placed. I can see that similar questions has been asked previously on Stackoverflow, but those have died out before a solution was found. Posting anyway in the hope that there is now someone out there with the knowledge to solve this =)

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• [C++] Write connected components of a graph using Boost Graph

  - by conradlee

  I have an file that is a long list of weighted edges, in the following form node1_id node2_id weight node1_id node3_id weight and so on. So one weighted edge per line. I want to load this file into boost graph and find the connected components in the graph. Each of these connected components is a subgraph. For each of these component subgraphs, I want to write the edges in the above-described format. I want to do all this using boost graph. This problem is in principle simple, it's just I'm not sure how to implement it neatly because I don't know my way around Boost Graph. I have already spent some hours and have code that will find the connected components, but my version is surely much longer and more complicated that necessary---I'm hoping there's a boost-graph ninja out there that can show me the right, easy way.

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• Problem with the scrollbar of a UIWebView

  - by Paulo Ferreira

  Hi there! Im using a UIWebView to access a website, when i rotate the phone (landscape) the UIWebView is properly resized and the scrollbar are on the right place (on the right edge...) but when i acess any of input fields to fill the information required and exit it the UIWebView scrollbar jumps to the middle of screen (looks like it get back to 320, the width of the screen on portrait). Some useful info, this program was created using IB, have lots of outlets, im thinking about in do (redo) everything programmatically cause i was not the author of the first version... If anyone have seen this before plz let me know.. Thanks in advance!

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• iPhone: CALayer + rotate in 3D + antialias?

  - by Colin

  Hi all, An iPhone SDK question: I'm drawing a UIImageView on the screen. I've rotated it in 3D and provided a bit of perspective, so the image looks like it's pointing into the screen at an angle. That all works fine. Now the problem is the edges of the resulting picture don't seem to be antialiased at all. Anybody know how to make it so? Essentially, I'm implementing my own version of CoverFlow (yeah yeah, design patent blah blah) using quartz 3d transformations to do everything. It works fine, except that each cover isn't antialiased, and Apples version is. I've tried messing around with the edgeAntialisingMask of the CALayer, but that didn't help - the defaults are that every edge should be antialiased... thanks!

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• Can django's auth_user.username be varchar(75)?

  - by perrierism

  Django's auth_user.username field is 30 characters. That means you can't have auth_user.username store an email address. If you want to have users authenticate based on their email address it would seem you have to do some wonky stuff like writing your own authentication backend which authenticates based on (email, password) instead of (username, password) and furthermore, figuring out what you're going to put in the username field since it is required and it is a primary key. Do you put a hash in there, do you try to put the id in there... bleh! Why should you have to write all this code and consider edge cases simply because username is too small for your (farily common) purposes? Is there anything wrong with running alter table on auth_user to make username be varchar(75) so it can fit an email? What does that break if anything?

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• Converting from samplerate/cutoff frequency to pi-radians/sample in a discrete time sampled IIR filter system.

  - by Fake Name

  I am working on doing some digital filter work using Python and Numpy/Scipy. I'm using scipy.signal.iirdesign to generate my filter coefficents, but it requires the filter passband coefficents in a format I am not familiar with wp, ws : float Passband and stopband edge frequencies, normalized from 0 to 1 (1 corresponds to pi radians / sample). For example: Lowpass: wp = 0.2, ws = 0.3 Highpass: wp = 0.3, ws = 0.2 (from here) I'm not familiar with digital filters (I'm coming from a hardware design background). In an analog context, I would determine the desired slope and the 3db down point, and calculate component values from that. In this context, how do I take a known sample rate, a desired corner frequency, and a desired rolloff, and calculate the wp, ws values from that? (This might be more appropriate for math.stackexchange. I'm not sure)

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• convert ArrayList.toString() back to ArrayList in one call

  - by dotnetnewbie

  I have a toString() representation of an ArrayList. Copying the toString() value to clipboard, I want to copy it back into my IDE editor, and create the ArrayList instance in one line. In fact, what I'm really doing is this: my ArrayList.toString() has data I need to setup a unit test. I want to copy this ArrayList.toString() into my editor to build a test against this edge case I don't want to parse anything by hand My input looks like this: [15.82, 15.870000000000001, 15.92, 16.32, 16.32, 16.32, 16.32, 17.05, 17.05, 17.05, 17.05, 18.29, 18.29, 19.16] The following do not work: Arrays.asList() google collections Lists.newArrayList() Suggestions?

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• Regular expression to replace quotation marks in HTML tags only

  - by Cindyydnic

  I have the following string: <div id="mydiv">This is a "div" with quotation marks</div> I want to use regular expressions to return the following: <div id='mydiv'>This is a "div" with quotation marks</div> Notice how the id attribute in the div is now surrounded by apostrophes? How can I do this with a regular expression? Edit: I'm not looking for a magic bullet to handle every edge case in every situation. We should all be weary of using regex to parse HTML but, in this particular case and for my particular need, regex IS the solution...I just need a bit of help getting the right expression.

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• Alignment of rollover item affected by position of header

  - by Steven

  Hi guys, Got a problem where when you rollover "about us" the rollover appeared to the right of the screen exactly 224 pixels from the edge of the browser (maintained this gap when reducing the size of the browser) I fixed it by changing the .css position of the wrapper (from absolute to static) How ever now as you can see in the example ive done the header is aligning to the left: http://jimbeamracing.com.au/navigationtest.htm wrapper{ margin:0 auto; width:994px; position:static; padding:113px 0 0; } Any help would be much appreciated Regards, Steven

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• as3 - controlling flicker when scaling up a button or movieclip

  - by sol

  This is a situation I run into a lot but never seem to find a good solution. I have movieclips that I scale up slightly on rollover, but if you hover over the edge of the movieclip it just sits there and flickers, continuously receiving mouseOver and mouseOut events. How do you deal with this? Again, it's usually a problem when tweening the scale of a movieclip or button. my_mc.addEventListener(MouseEvent.MOUSE_OVER, mOver); my_mc.addEventListener(MouseEvent.MOUSE_OUT, mOut); private function mOver(m:MouseEvent) { TweenLite.to(m.target, .2, { scaleX:1.1, scaleY:1.1} ); } private function mOut(m:MouseEvent) { TweenLite.to(m.target, .2, { scaleX:1, scaleY:1} ); }

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• Why does Google's closure library not use real private members?

  - by Thor Thurn

  I've been a JavaScript developer for a while now, and I've always thought that the correct way to implement private members in JavaScript is to use the technique outlined by Doug Crockford here: http://javascript.crockford.com/private.html. I didn't think this was a particularly controversial piece of JavaScript wisdom, until I started using the Google Closure library. Imagine my surprise... the library makes no effort to use Crockford-style information hiding. All they do is use a special naming convention and note "private" members in the documentation. I'm in the habit of assuming that the guys at Google are usually on the leading edge of software quality, so what gives? Is there some downside to following Mr. Crockford's advice that's not obvious?

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• Indentation (and wrap-indentation) of debug strings output by printf()/fprintf() in C program

  - by mbaitoff

  I'm using a debug output using printf() in my functions, but the output goes to the console starting at the 1st columns. I'd like to distinguish the nesting level of functions by indenting their output strings each time I dive into the function (it's implemented easily having a static int indentlevel; variable, which is incremented at the beginning of a function, used as a space-filler-count and decremented at the end). But the flaw is that once the output line becomes too long to be wrapped at the console edge, lines' wrapped parts start at column 1 of the console. Should I take care about this, since once the output is redirected to a file, lines are, say, one-line-length, and widths of the lines depend only on the text file viewer settings?

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• In a digital photo, detecting if a mountain is obscured by clouds.

  - by Gavin Brock

  The problem I have a collection of digital photos of a mountain in Japan. However the mountain is often obscured by clouds or fog. What techniques can I use to detect that the mountain is visible in the image? I am currently using Perl with the Imager module, but open to alternatives. All the images are taken from the exact same position - these are some samples. My naïve solution I started by taking several horizontal pixel samples of the mountain cone and comparing the brightness values to other samples from the sky. This worked well for differentiating good image 1 and bad image 2. However in the autumn it snowed and the mountain became brighter than the sky, like image 3, and my simple brightness test started to fail. Image 4 is an example of an edge case. I would classify this as a good image since some of the mountain is clearly visible.

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• iframe as scriptaculous droppable

  - by Nathan

  I have a sortable list and an iframe on the same page. What I'm trying to do is define the <iframe> as a Droppable. Everything works with out errors but when I try to drag a sortable item across the Iframe it stops at the edge. ( if I move it slowly it seems works in firefox) The Iframe is set to DesignMode ="on" so covering it with a transparent element to act as the droppable does not seem applicable here. Anyone know of any other solutions or a better way to handle this?

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• how to round_corner a logo without leaving white background(transparent?) with it using pil?

  - by bdictator

  I got a square logo and I need to round_corner it, searched for a while and got the follow code "working": def round_corner_jpg(image, radius): """generate round corner for image""" mask = Image.new('RGB', image.size) #mask = Image.new('RGB', (image.size[0] - radius, image.size[1] - radius)) #mask = Image.new('L', image.size, 255) draw = aggdraw.Draw(mask) brush = aggdraw.Brush('black') width, height = mask.size draw.rectangle((0,0,width,height), aggdraw.Brush('')) #upper-left corner draw.pieslice((0,0,radius*2, radius*2), 90, 180, None, brush) #upper-right corner draw.pieslice((width - radius*2, 0, width, radius*2), 0, 90, None, brush) #bottom-left corner draw.pieslice((0, height - radius * 2, radius*2, height),180, 270, None, brush) #bottom-right corner draw.pieslice((width - radius * 2, height - radius * 2, width, height), 270, 360, None, brush) #center rectangle draw.rectangle((radius, radius, width - radius, height - radius), brush) #four edge rectangle draw.rectangle((radius, 0, width - radius, radius), brush) draw.rectangle((0, radius, radius, height-radius), brush) draw.rectangle((radius, height-radius, width-radius, height), brush) draw.rectangle((width-radius, radius, width, height-radius), brush) draw.flush() del draw return ImageChops.add(mask, image) then I saved the returned image object,however it has white background in it?how can i get rid of the white background? Thanks in advance~

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• Resize a WPF window, but maintain proportions?

  - by rathkopf

  I have a user resizable WPF Window that I want to constrain the resizing so the aspect ratio of the window stays constant. Ideally I would like to constrain mouse location when the window is being resized by dragging a corner to positions that maintain the proper aspect ration. If an edge is resized with the mouse, the other dimension should change at the same time. Is there a simple way to do this or a good on-line example that anyone knows of? If no better solutions come up, I'll post what I've done after I've refined it a bit.

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• width of a frustum at a given distance from the near plane

  - by structolite

  I'm using CML to manage the 3D math in an OpenGL-based interface project I'm making for work. I need to know the width of the viewing frustum at a given distance from the eye point, which is kept as a part of a 4x4 matrix that represents the camera. My goal is to position gui objects along the apparent edge of the viewport, but at some distance into the screen from the near clipping plane. CML has a function to extract the planes of the frustum, giving them back in Ax + By + Cz + D = 0 form. This frustum is perpendicular to the camera, which isn't necessarily aligned with the z axis of the perspective projection. I'd like to extract x and z coordinates so as to pin graphical elements to the sides of the screen at different distances from the camera. What is the best way to go about doing it? Thanks!

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• Embedded computer vision platforms

  - by Egon

  Hi folks, I am planning to start a computer vision based project on a smart phone platform. I know iPhone ( http://niw.at/articles/2009/03/14/using-opencv-on-iphone/en ) and Andriod ( http://github.com/billmccord/OpenCV-Android ) have openCV support. I am interested in knowing how was your experience with the level of integration, support and ease of building good apps on either platform. Also I do want to consider windows phone 7 ( and Zune) as a platform, Are there any Computer Vision libraries for that platform or any good development tools( does Aforgenet work or any other good suggestion) ? Also can you suggest some popular augmented reality apps which uses cutting edge technology ( I am aware of http://www.pranavmistry.com/projects/sixthsense/ ) Thnx in advance!

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• how to keep dragged TitleWindow within Flex app boundary

  - by Tim

  I am using PopupManager in FB4 to display a custom dialog. popwin = new TitleWindow(); popwin.addElement(myCustomDialog); PopUpManager.addPopUp(popwin,this,false); PopUpManager.centerPopUp(popwin); It's possible to drag the popped up TitleWindow and let go of it when its gray title bar lies outside the bounds of the Flex app rectangle, and then the popup cannot be grabbed again. It's also possible to drag the TitleWindow downwards so it becomes completely invisible below the bottom edge of the Flex app rectangle. When the Flex app bounds are less than the full browser window, and the user is working quickly, this chances of this happening increase. Is there a simple setting that will keep this from happening, or must the programmer intercept the behavior during the drag operation? Thanks Tim

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• Reversed Latitude/Longitude US Tiger/Line Shape File to MySQL w/ OGR2OGRP

  - by Dave LeJeune

  Hi - I've downloaded the latest set (2010) of TIGER edge shape files (ESRI shapefile format) from the US Census website and am loading them into MySQL using the GDAL ogr2ogr utility. A new table (geotest) does get created with a SHAPE column that has the geometry defined as a LINESTRING. However, I am seeing reversed latitude and longitude values that get reversed when running the following command: ogr2ogr -f "MySQL" MySQL:"geo,user=lejeuned,host=localhost,password=cnickl234" -nln geotest -nlt LINESTRING -append -a_srs "EPSG:4326" -lco engine=MYISAM tl_2010_01021_edges.shp Mapping the latitude/longitude (after reversing them of course) they appear to be spot on so I suspect there is just something I am doing wrong or flag I am missing which is causing the latitude and longitudes to be transposed. When I select the SHAPE column using astext() I get the following result: LINESTRING(-86.69863 32.973164,-86.69853 32.97302,-86.69856 32.97287,-86.698613 32.972825,-86.6988 32.972825,-86.6989 32.972892,-86.6989 32.973002,-86.69874 32.97316,-86.69864 32.97318,-86.69863 32.973164) Any ideas what I am doing wrong?

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• What Would You Do With 48 Cores?

  - by jeroen.vangoey

  The AMD Server team has announced a contest where they are seeking the best essays, videos, or blog posts documenting how you might use 48 cores. They are primarily looking for "what you can do to help society, to help others. That will give you an edge." So, what would you do with 48 cores? Disclaimer: I am not affiliated with AMD (I am even not eligible for the contest because I don't live in the US/Canada) but would love to see what the SO community can come up with.

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