Comments for enj http://enja.org casin' the joint since '85 Wed, 01 Feb 2012 08:32:26 +0000 hourly 1 http://wordpress.org/?v=3.3.1 Comment on Particles in BGE: Fluids in Real Time with OpenCL by Gang http://enja.org/2010/12/16/particles-in-bge-fluids-in-real-time-with-opencl/comment-page-1/#comment-1705 Gang Wed, 01 Feb 2012 08:32:26 +0000 http://enja.org/?p=358#comment-1705 How do you finish this part: press one button, and then particles come out? Thank you for you patience. How do you finish this part: press one button, and then particles come out? Thank you for you patience.

]]> Comment on EnjShape by Ian http://enja.org/enjshape/comment-page-1/#comment-1703 Ian Tue, 31 Jan 2012 19:27:10 +0000 http://enja.org/enj/?page_id=32#comment-1703 @John Your project sounds interesting. It seems like you need a GIS backend for querying geographic information (given current XY location, what is near me?) that can live on the robot. My personal preference would be to use PostGIS as my geographic database to store the maps or other information and then python to query it. It depends on what kind of processing power and storage space you have on the robot, but I would definitely start by looking at open source solutions. qgis is another open source GIS program which may also give you some starting points. @John
Your project sounds interesting. It seems like you need a GIS backend for querying geographic information (given current XY location, what is near me?) that can live on the robot. My personal preference would be to use PostGIS as my geographic database to store the maps or other information and then python to query it. It depends on what kind of processing power and storage space you have on the robot, but I would definitely start by looking at open source solutions. qgis is another open source GIS program which may also give you some starting points.

]]> Comment on EnjShape by John http://enja.org/enjshape/comment-page-1/#comment-1701 John Tue, 31 Jan 2012 05:15:08 +0000 http://enja.org/enj/?page_id=32#comment-1701 Thank you for the plug in. The shapefile I was trying to use didn't work for some reason (turns out the file contained 5 polygons). I would be glad to provide the file if you wanted to see why it wasn't working. But on a slightly different note I was hoping that you could help me in my efforts on a project I am working on for grad school. As part of my research one of my tasks is to create a piece of software that is to display a map of the surrounding area, show the current location (from a GPS), and to implement a shapefile (as a boundary outline). I am not able to really get enough information to get on the right track on how to do this, and would appreciate any assistance! The project involves a large-scale robot that will be operated by tele-communication in rough terrain. So this mapping and gps software will need to be entirely offline, but the location in use will be known. It is very preferred to find a cost effective means to doing this process (maybe even a simple API that could do the simple task, dll libraries, or active x. My initial guess is to use a geo-referenced image (that I would get the lat and long of and know the boundaries of that image). Then from a GPS I then would treat the image as an XY plot somehow and that would provide the current position. Obviously even this step can be a challenge depending on what kind of image, map, kml file, etc that I can find and use. So I would appreciate any advice, suggestions, or comments. Sincerely, John Thank you for the plug in. The shapefile I was trying to use didn’t work for some reason (turns out the file contained 5 polygons). I would be glad to provide the file if you wanted to see why it wasn’t working.

But on a slightly different note I was hoping that you could help me in my efforts on a project I am working on for grad school. As part of my research one of my tasks is to create a piece of software that is to display a map of the surrounding area, show the current location (from a GPS), and to implement a shapefile (as a boundary outline). I am not able to really get enough information to get on the right track on how to do this, and would appreciate any assistance!

The project involves a large-scale robot that will be operated by tele-communication in rough terrain. So this mapping and gps software will need to be entirely offline, but the location in use will be known. It is very preferred to find a cost effective means to doing this process (maybe even a simple API that could do the simple task, dll libraries, or active x.

My initial guess is to use a geo-referenced image (that I would get the lat and long of and know the boundaries of that image). Then from a GPS I then would treat the image as an XY plot somehow and that would provide the current position. Obviously even this step can be a challenge depending on what kind of image, map, kml file, etc that I can find and use.

So I would appreciate any advice, suggestions, or comments.

Sincerely,
John

]]> Comment on Simple D3.js Bar Chart Webcast by enj http://enja.org/2011/09/15/simple-d3-js-pie-chart-webcast/comment-page-1/#comment-1621 enj Fri, 20 Jan 2012 02:36:28 +0000 http://enja.org/?p=660#comment-1621 @Bob, I think it would be better to add a new column where you specify the full name, then access that data when making your text. so if your new column was called fullname then you could do text(d.fullname) inside the function. @Bob, I think it would be better to add a new column where you specify the full name, then access that data when making your text.

so if your new column was called fullname then you could do text(d.fullname) inside the function.

]]> Comment on Simple D3.js Bar Chart Webcast by Bob http://enja.org/2011/09/15/simple-d3-js-pie-chart-webcast/comment-page-1/#comment-1620 Bob Thu, 19 Jan 2012 22:42:00 +0000 http://enja.org/?p=660#comment-1620 Hey, this tutorial is pretty neat, but I noticed its a bit different from the one that's included in the examples on the D3.js site. https://github.com/mbostock/d3/blob/master/examples/bar/bar.html If you change the labels of the abbreviations of states to the full name (in the CSV file), the full name won't show up. Any suggests would be super useful - its been frustrating to toy around with getting the labels right. Hey, this tutorial is pretty neat, but I noticed its a bit different from the one that’s included in the examples on the D3.js site.

https://github.com/mbostock/d3/blob/master/examples/bar/bar.html

If you change the labels of the abbreviations of states to the full name (in the CSV file), the full name won’t show up. Any suggests would be super useful – its been frustrating to toy around with getting the labels right.

]]> Comment on Adventures in PyOpenCL: Part 1 Getting Started with Python by pm http://enja.org/2011/02/22/adventures-in-pyopencl-part-1-getting-started-with-python/comment-page-1/#comment-1610 pm Fri, 13 Jan 2012 10:13:25 +0000 http://enja.org/?p=424#comment-1610 the benchmark you mention is so wrong. you have to compare to numpy operations, not pure python on CPU. with numpy you can write directly c_result = (a + b) * (a+b) * (a/2) my results: ('Execution time of test without OpenCL: ', 11.889606952667236, 's') ('Execution time of test within numpy ', 0.00010013580322265625, 's') =============================================================== ('Platform name:', 'NVIDIA CUDA') ('Platform profile:', 'FULL_PROFILE') ('Platform vendor:', 'NVIDIA Corporation') ('Platform version:', 'OpenCL 1.1 CUDA 4.0.1') --------------------------------------------------------------- ('Device name:', 'Quadro NVS 290') ('Device type:', 'GPU') ('Device memory: ', 255L, 'MB') ('Device max clock speed:', 918, 'MHz') ('Device compute units:', 2) Execution time of test: 0.0360267 s Results OK the benchmark you mention is so wrong.

you have to compare to numpy operations, not pure python on CPU.
with numpy you can write directly
c_result = (a + b) * (a+b) * (a/2)

my results:
(‘Execution time of test without OpenCL: ‘, 11.889606952667236, ‘s’)
(‘Execution time of test within numpy ‘, 0.00010013580322265625, ‘s’)
===============================================================
(‘Platform name:’, ‘NVIDIA CUDA’)
(‘Platform profile:’, ‘FULL_PROFILE’)
(‘Platform vendor:’, ‘NVIDIA Corporation’)
(‘Platform version:’, ‘OpenCL 1.1 CUDA 4.0.1′)
—————————————————————
(‘Device name:’, ‘Quadro NVS 290′)
(‘Device type:’, ‘GPU’)
(‘Device memory: ‘, 255L, ‘MB’)
(‘Device max clock speed:’, 918, ‘MHz’)
(‘Device compute units:’, 2)
Execution time of test: 0.0360267 s
Results OK

]]> Comment on Adventures in OpenCL: Part 1, Getting Started by Nicholas Cain http://enja.org/2010/07/13/adventures-in-opencl-part-1-getting-started/comment-page-1/#comment-1609 Nicholas Cain Thu, 12 Jan 2012 04:44:53 +0000 http://enja.org/?p=218#comment-1609 Thanks Ian! Worked right out of the box, great job! I am learning it all as fast as I can! -n Thanks Ian!

Worked right out of the box, great job!

I am learning it all as fast as I can!

-n

]]> Comment on Adventures in OpenCL: Part 1, Getting Started by Harini http://enja.org/2010/07/13/adventures-in-opencl-part-1-getting-started/comment-page-1/#comment-1607 Harini Wed, 11 Jan 2012 05:46:14 +0000 http://enja.org/?p=218#comment-1607 hey , can u please help me out. am a student , and very new to openCL. my pc is having AMD processor with ATI graphic card , i have installed visual studio 10 and AMD APP KernelAnalyzer 1.9 , n included 10 header files given in kronous group into my include folder of vc. i am noting getting next steps to compile it , please tell me how should i debug, build ,compile n run my example programs. im using windows vista os. pls do reply need help badly hey ,
can u please help me out. am a student , and very new to openCL. my pc is having AMD processor with ATI graphic card , i have installed visual studio 10 and AMD APP KernelAnalyzer 1.9 , n included 10 header files given in kronous group into my include folder of vc. i am noting getting next steps to compile it , please tell me how should i debug, build ,compile n run my example programs. im using windows vista os. pls do reply need help badly

]]> Comment on Particles in BGE: Fluid Surface and Collision in the works by brett http://enja.org/2011/02/10/particles-in-bge-fluid-surface-and-collision-in-the-works/comment-page-1/#comment-1600 brett Sun, 08 Jan 2012 14:21:21 +0000 http://enja.org/?p=401#comment-1600 This looks great, and I hope your work with Evan on using this as a C-library works out well. I can help with Python ctypes wrappers. This looks great, and I hope your work with Evan on using this as a C-library works out well. I can help with Python ctypes wrappers.

]]> Comment on Adventures in OpenCL: Part 1.5, C++ Bindings by Jelmer Wolterink http://enja.org/2010/07/20/adventures-in-opencl-part-1-5-cpp-bindings/comment-page-1/#comment-1595 Jelmer Wolterink Fri, 06 Jan 2012 15:24:44 +0000 http://enja.org/?p=248#comment-1595 Thanks for your tutorial. I was looking for a quick start in OpenCL and this really helped me forward. Thanks for your tutorial. I was looking for a quick start in OpenCL and this really helped me forward.

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