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Search found 22897 results on 916 pages for 'query processing'.

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• "Tail" a logstash server query

  - by phatmanace

  Assuming I have a logstash server chocked full of logs being loaded regularly, is there a reasonably elegant way that I can tail the results of a continuously executing query on the logstash server and show this in a terminal window e.g some-special-logstash-command.sh | egrep -v "(searchword1|searchword2)" the idea being that the command pipes stuff out of logstash and to my grep query that filters and shows me the filtered output for. .. of course if there is a logstash command that can do the grep piece for me as well, then that works too :) motivation for doing this, is that assuming all of my events from my estate is being loaded into logstash, then would be nice to have a terminal window with a continuous tail of interesting events as they occur scrolling past the screen. -Ace

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• How can I easily correct slight rotational misalignment in scanned images

  - by AndrewR

  I've got a whole lot of scanned images ( 500) the majority of which were scanned with the paper not completely square. They need to be rotated about 1-5 degrees to be aligned again. Is there any software that does this? I know some scanner drivers do but mine doesn't seem to.

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• Need an idiot-proof picture resizing program for Windblows.

  - by marcusw

  My friend needs to resize some pictures as part of a web publishing job, but he is rather clueless when it comes to computers. I am in charge of teaching him how to do this, but only have Linux (albeit with Wine installed) at my disposal for testing. Could you guys recommend a fast, easy, batch-capable, and hopefully open-source program that will resize pictures to the resolution he wants? It doesn't have to be anything fancy, but it needs to be quick and easy to use. Thanks!

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• Linux: Tool to monitor every process, execute-command, shortly, monitor what's happening at the moment

  - by Bevor

  Hello, due to a freeze problem of my Ubuntu 10.10 (it is not isolatable) I though about logging every executable of the kernel somehow in any file to see what happens last when a freeze occures the next time to not lose valuable information. I found acct but this is obviously not what I'm looking for. Actually it logs just user commands and those things. I need something which logs in a much "deeper" level. The best would be some kind of script which records every interrupt. Does anybody know some tool like that?

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• Query Performance Degrades with High Number of Logical Reads

  - by electricsk8

  I'm using Confio Ignite8 to derive this information, and monitor waits. I have one query that runs frequently, and I notice that on some days there is an extremely high number of logical reads incurred, +300,000,000 for 91,000 executions. On a good day, the logical reads are much lower, 18,000,000 for 94,000 executions. The execution plan for the query utilizes clustered index seeks, and is below. StmtText |--Nested Loops(Inner Join, OUTER REFERENCES:([f].[ParentId])) |--Clustered Index Seek(OBJECT:([StructuredFN].[dbo].[Folder].[PK_Folders] AS [f]), SEEK:([f].[FolderId]=(8125)), WHERE:([StructuredFN].[dbo].[Folder].[DealId] as [f].[DealId]=(300)) ORDERED FORWARD) |--Clustered Index Seek(OBJECT:([StructuredFN].[dbo].[Folder].[PK_Folders] AS [p]), SEEK:([p].[FolderId]=[StructuredFN].[dbo].[Folder].[ParentId] as [f].[ParentId]), WHERE:([StructuredFN].[dbo].[Folder].[DealId] as [p].[DealId]=(300)) ORDERED FORWARD) Output from showstatistics io ... Table 'Folder'. Scan count 0, logical reads 4, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0. Any ideas on how to troubleshoot where these high logical reads come from on certain days, and others nothing?

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• Why does F@H not bind to more than one core on Windows?

  - by warren

  I have been contributing to Stanford's Folding@Home project for some time with most of the computers I own. I just installed the Windows client on a new machine running Windows 7, but see that the F@H process only binds to one CPU core. Is this due to it being run on Windows? (I have the 64-bit edition of Windows 7 installed.) On the Mac and under 64-bit Linux distros, it will run across all available CPU cores.

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• transform a trapezium into a rectangle

  - by Phuong Nguyen

  I use my iPhone to capture a painting. However, the angle was not perfect, so instead of getting a straight rectangle, I get a trapezium. However, I want to transform this trapezium back into a rectangle (using some affine transformation). However, I cannot find a good way to do it. Please advice.

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• Creating Apple iPhone/iPod-Like Icons

  - by Daniel

  What is the best way to create apple iPhone/iPod shaped icons, ideally there should be a website that you can upload images to and have an them shaped to the default shape, etc. Does this exists? What is the best way to great these icons? I did find this: http://elitebydesign.com/design-the-itunes-icon-for-the-iphone-and-ipod-touch/ But there should be a batch type program out there somewhere...

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• Free tool to extract objects from photos

  - by hasen j

  Is there a free tool that's good at extracting objects from photos? It has to work on linux For instance, extracting a person from a photograph.

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• Read non-blocking from multiple fifos in parallel

  - by Ole Tange

  I sometimes sit with a bunch of output fifos from programs that run in parallel. I would like to merge these fifos. The naïve solution is: cat fifo* > output But this requires the first fifo to complete before reading the first byte from the second fifo, and this will block the parallel running programs. Another way is: (cat fifo1 & cat fifo2 & ... ) > output But this may mix the output thus getting half-lines in output. When reading from multiple fifos, there must be some rules for merging the files. Typically doing it on a line by line basis is enough for me, so I am looking for something that does: parallel_non_blocking_cat fifo* > output which will read from all fifos in parallel and merge the output on with a full line at a time. I can see it is not hard to write that program. All you need to do is: open all fifos do a blocking select on all of them read nonblocking from the fifo which has data into the buffer for that fifo if the buffer contains a full line (or record) then print out the line if all fifos are closed/eof: exit goto 2 So my question is not: can it be done? My question is: Is it done already and can I just install a tool that does this?

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• How to compress a huge amount of PNG images?

  - by T Pops

  At work, on certain projects I have to manage a lot of images. Most of the time PNG files work the best for what I'm doing. With such a huge amount of images, I've tried using PNG compression with PNG Gauntlet but sometimes the file doesn't really change and sometimes PNG Gauntlet reports it would've made the filesize bigger! Am I just maxing out the compression or is there something more I can do?

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• Moving files with batch files from one pc to a server, to a another pc - worried about disk corruption

  - by AnchientAnt

  I use scheduled tasks that calls a batch file, that calls more batch files to move about three files from a pc, to a server, then to multiple other pcs. It all happens very quickly, as they are small files. Are there any pitfalls for how fast these transfers happen? I'm just mildly concerned about causing some disk corruption somehow. I use logic like 1. Call MapToPc if files exist then move file to folder on server. Disconnect 2. Call SendtoPCs If files exist (the files just moved to the server) then MapToPCs Move all files Disconnect All of this happens in about 2 secs or less. edit: this on windows 7, server 2003, xp respectively

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• How can I further improve the quality of my home videos?

  - by Bob

  So now that I have found out how to deinterlace my videos, I am wondering if there is other software out there that can further help improve the quality of my videos. Some other problems I have noticed is when you move the camera side to side very quickly you can notice tearing in the the picture. That is the top half of the frame doesn't line up with the bottom half, it appears that the bottom half is shifted to the right or left depending on which way the camera is moving. Shaky camera hand is also a problem in some videos. I don't expect any software to be able to correct these problems 100%, especially the shaky hand. I know that using a tripod or something of the sorts is the best way to prevent the shakes, but for preexsiting videos what are the best solutions I can use?

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• Need to balance volume on both audio channels in video file

  - by Tony_Henrich

  I have a video file where one audio channel is much louder than the other. Which app can I use to allow me to take the louder channel and place on the low channel? I know it won't be stero anymore but mono sound on both channels is better than unbalanced stereo channel

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• Need to remove borders from multiple images

  I have a few hundred family images and they were all sent to us with borders that I would like to remove. Thankfully the borders are all the same size of 20 pixels and they are all .jpg so this will probably make things easier but im looking for a way to "batch process" all of them quickly so I dont need to open photoshop for each image and do it individually. Command line is preferred, the only big problem is they are mostly different sizes. Here is an example

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• How to batch edit a list of files?

  - by user43144

  I have a list of files where I need to remove some lines that have been added yesterday by a spambot. The section I want to remove looks like this: ^M <script>[...] bunch of malware code [...]</script> That section seems to have been appended to the files, so I can be relatively sure it's the last lines of each file that contain this part. Now I know a bit of Linux, but not enough to do this via a command. How would I go about and do this?

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• Is there a word processor similar to MS Word which saves files as readable txt files?

  - by zenbomb

  I'm writing a paper together with my supervisor and would like to have a more sophisticated version control than *_291112_NEW_NEW_revised1.doc files. My supervisor is a non-computer person will never ever use LaTeX or git and loves MS Word. I'm therefore looking for an alternative to Word (I need commenting on text passages!) which stores the files as clean text (Markup for formating is fine), so I'm able to put them under version control on my side. I'm aware that git can also handle binary files, but I'd prefer the cleaner way of looking at the contents directly. If there's a way to automatically extract the text from word files, I'm fine with that too for now.

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• Photoshop: Trim a photo so it contains no transparent pixels?

  - by nickf

  In Photoshop, I've put together some panorama photos using the Photomerge tool and the resulting image contains a lot of transparent pixels. Also, because it's put together of multiple photos the alignment can be off. What I'd like to do is cut the image down to the largest box which contains no transparent pixels at all. It's similar to the Trim tool, but this would remove a number of non-transparent pixels. Is there anything like this? Basically something which would automatically crop the above image to the selection box there: a rectangle with no transparent pixels.

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• What does the GEGL Operation in GIMP do?

  - by AtomFury

  I see it under the Tools menu, but I've never used it before. What's it do?

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• String chunking algorithm with natural language context

  - by Chris Ballance

  I have a arbitrarily large string of text from the user that needs to be split into 10k chunks (potentially adjustable value) and sent off to another system for processing. Chunks cannot be longer than 10k (or other arbitrary value) Text should be broken with natural language context in mind split on punctuation when possible split on spaces if no punction exists break a word as a last resort I'm trying not to re-invent the wheel with this, any suggestions before I roll this from scratch? Using C#.

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• How does an unsharp mask work?

  - by Bob Aman

  I've been playing around with image processing lately, and I'd like to know how the unsharp mask algorithm works. I'm looking at the source code for Gimp and it's implementation, but so far I'm still in the dark about how it actually works. I need to implement it for a project I'm working on, but I'd like to actually understand the algorithm I'm using.

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• How should I call the onDraw() method of an Android view 30 times per second

  - by Nathan

  For Android, I have a custom view which I fill up with primitive shapes in the onDraw() method. Coming from a Processing background, I expected the draw method to be called automatically 30 times per second, but its clear that that's not how android views work. So how should I go about calling this method 30 times per second?

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• Open Source ImageProcessing Library, SDK or API

  - by Kubi

  Hi, I am looking for an open source image processing libraries or APIs those provide me to create a program which captures the license plate of a car in a parking system and gives me the number plate as a text . It would be great if I can have it in managed code (c# or java). Any help would be greatly appreciated. Thanks in advance

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• Face detection in 100% pure PHP

  - by Yogi Yang 007

  I am looking for PHP script that will detect face in a uploaded photo and automatically crop it accordingly. The code should be in pure PHP without depending on any third party API's or Libs. This code will be a part of our existing code for processing images. In fact this is the only part that is missing! I would prefer to have code in PHP version 5.x not PHP 6.x.

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• Advice on using OCR on an image of a blackboard

  - by ro

  I'm trying to get an image of a blackboard readable by OCR. Naturally, most OCR software doesn't like dirty images. What image processing should I try to put the image through to clean the image up?

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