tag:blogger.com,1999:blog-6714952435202069761.post3983703747468741836..comments2023-06-05T01:06:18.319-07:00Comments on Geospatial Computational Social Science: Reimplementation of the Urban Growth Model in NetlogoAnonymoushttp://www.blogger.com/profile/13855971294404124653noreply@blogger.comBlogger15125tag:blogger.com,1999:blog-6714952435202069761.post-36812575867142574382020-09-26T05:19:20.201-07:002020-09-26T05:19:20.201-07:00The foremost thing in writing an essay is to know ...The foremost thing in writing an essay is to know how to write an essay outline. Until and unless you have the structure ready you can not fathom how far you need to go. The initial process starts with this format. It gives you an idea where you need to concentrate the most. In any form of essay writing the idea is considered the crux of the matter. The idea needs to be jotted down somewhere. This is where the outline of the essay comes handy. <a href="https://essayshark.com/" rel="nofollow">essay writing</a><br />seoworkinghttps://www.blogger.com/profile/09900038613481246997noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-16296419685392534772016-10-01T16:33:42.332-07:002016-10-01T16:33:42.332-07:00Hi Felix,
Unfortunately, you will not have road g...Hi Felix,<br /><br />Unfortunately, you will not have road gravity effect if you turn off road_influence. The problem could be solved by either implementing a more efficient algorithm, or to write it in a faster language (java for example). I may be able to do that in the future when time permits.Anonymoushttps://www.blogger.com/profile/13855971294404124653noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-13475213753796057382016-10-01T16:30:10.076-07:002016-10-01T16:30:10.076-07:00Hi Bobo, the GIS extension is included in Netlogo ...Hi Bobo, the GIS extension is included in Netlogo 5.3.1, so you don't have to install it separately. I do realize that when road_influence is turned on, the model is extremely slow. The problem could be solved by either implementing a more efficient algorithm, or to write it in a faster language (java for example). Anonymoushttps://www.blogger.com/profile/13855971294404124653noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-7133694329995537072016-06-29T01:28:01.801-07:002016-06-29T01:28:01.801-07:00Hello Yang,
Thank you for the contribution toward...Hello Yang,<br /><br />Thank you for the contribution towards this partial but extremely helpful re-implementation. I'm using it to simulate the urban growth of an African city and I have one question. As you rightly mentioned, activating the road influence growth increases the computational time considerably. Indeed, using core i5 windows machine with 8G memory, I could not get even a tick for over 12 hours. I'm therefore contemplating on turning the road influence off BUT will the road gravity coefficient still work? Thus, will I still have road gravity effect in the model if I turn the road influence button off but adjust the road gravity coefficient slider? <br /><br />Best wishesAnonymoushttps://www.blogger.com/profile/17184741141344923602noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-90569121815541120102016-06-29T01:06:32.545-07:002016-06-29T01:06:32.545-07:00Hello Yang,
Thank you for the contribution toward...Hello Yang,<br /><br />Thank you for the contribution towards this partial but extremely helpful re-implementation. I'm using it to simulate the urban growth of an African city and I have one question. As you rightly mentioned, activating the road influence growth increases the computational time considerably. Indeed, using core i5 windows machine with 8G memory, I could not get even a tick for over 12 hours. I'm therefore contemplating on turning the road influence off BUT will the road gravity coefficient still work? Thus, will I still have road gravity effect in the model if I turn the road influence button off but adjust the road gravity coefficient slider? <br /><br />Best wishes <br />FelixAnonymoushttps://www.blogger.com/profile/17184741141344923602noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-89798365528073015682016-03-07T22:22:40.890-08:002016-03-07T22:22:40.890-08:00Also I have a problem running the model when I tur...Also I have a problem running the model when I turn road_influence ON. The program just hangs. Anyone else face this problem?Bobohttps://www.blogger.com/profile/08577231857815694918noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-11417519252552713672016-03-06T20:40:14.962-08:002016-03-06T20:40:14.962-08:00Hello Yang Zhou,
Thank you for such a wonderful r...Hello Yang Zhou,<br /><br />Thank you for such a wonderful re-implementation of SLEUTH. I am extremely new to Netlogo and I have a couple of questions. Is this GIS extension from https://github.com/NetLogo/GIS-Extension ? If it is, do I have to install this extension to my Netlogo first? (but your code ran fine without the extension installed on my Netlogo. Or is the extension was included in Netlogo 5.3.1 already?<br /><br />Thank you very much!Bobohttps://www.blogger.com/profile/08577231857815694918noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-18072104803717603052016-03-06T20:22:09.184-08:002016-03-06T20:22:09.184-08:00This comment has been removed by the author.Bobohttps://www.blogger.com/profile/08577231857815694918noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-78761350365109447852015-10-30T17:42:58.411-07:002015-10-30T17:42:58.411-07:00Thank you, I am happy you like it :)Thank you, I am happy you like it :)Anonymoushttps://www.blogger.com/profile/13855971294404124653noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-53562894374794199822015-10-30T17:42:18.099-07:002015-10-30T17:42:18.099-07:00Hi Agung, \r\n means start a new line in the text ...Hi Agung, \r\n means start a new line in the text file. Sorry for the last response. I am glad that you solved the NaN problem!Anonymoushttps://www.blogger.com/profile/13855971294404124653noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-52422031158738860432015-10-28T07:52:46.153-07:002015-10-28T07:52:46.153-07:00Dear Yang,
Thank you for this implementation. I&#...Dear Yang,<br /><br />Thank you for this implementation. I'm a GIS specialist learning right now NetLogo and I found your work extremely helpful in setting the environment for my work.<br /><br />Cheers, Piotr Dzieszko..https://www.blogger.com/profile/11712692072360067118noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-65567643585505659112015-10-26T06:13:03.828-07:002015-10-26T06:13:03.828-07:00Apologize, I found the solution for the NaN on Net...Apologize, I found the solution for the NaN on Netlogo. I should put the ">=" sign instead of just ">". Anonymoushttps://www.blogger.com/profile/10763700668100274391noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-48570521495016634432015-10-26T05:56:07.543-07:002015-10-26T05:56:07.543-07:00Hi Yang, nice explanation on the implementation of...Hi Yang, nice explanation on the implementation of SLEUTH using ABM. I have few questions regarding the code on Netlogo. On the file-print lines, you put "... \r\n", what does "\r\n" means? Secondly, when I create a raster map from ArcGIS and import it to NetLogo, NetLogo cannot handle the cells with noData value which is labelled as NaN on NetLogo. I found post how to handle NaN using something like ifelse [value > 0] or [value < 0] but I didnt work on my case. Do you know how to handle NaN on Netlogo? Cheers. Agung. (apologize if the questions are too trivial, i am still new on Netlogo and still learning)Anonymoushttps://www.blogger.com/profile/10763700668100274391noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-56494693825960473732015-10-01T07:45:32.063-07:002015-10-01T07:45:32.063-07:00Hi Javier,
I did not include Self modification i...Hi Javier, <br /><br />I did not include Self modification in this model. Self modification will change the growth coefficients over time. Please see the following website for more information regarding Self modification.<br /><br />http://www.ncgia.ucsb.edu/projects/gig/About/gwSelfMod.htm<br /><br />Thank you for your interest!<br /><br />Best,<br />YangAnonymoushttps://www.blogger.com/profile/13855971294404124653noreply@blogger.comtag:blogger.com,1999:blog-6714952435202069761.post-63286604895123335962015-09-30T08:06:20.913-07:002015-09-30T08:06:20.913-07:00Hello Yang Zhou ,
Congratulations on your netlogo ...Hello Yang Zhou ,<br />Congratulations on your netlogo implementation of SEUTH. I have previously tried it but with no success, and now with your implementation hope I can have results. Just wanted to ask what has been left out because you say that is a partial re-implementation. Thanks in advanced for your answer. Regards,<br /><br />Javier<br />Javierhttps://www.blogger.com/profile/15602921803319270218noreply@blogger.com