Hi Pete, I am still having issues with spdlib on some of my lidar files. The command I’m running is:
spdtranslate --if LAS --of SPD -x LAST_RETURN -t output/tmp/ -I 200912_185142_Channel_1_NAD83_CSRS_19N_CGVD2013_3005_KCN256A_Zone1-FallingTide-001.las -o output/intermediate_files/200912_185142_Channel_1_NAD83_CSRS_19N_CGVD2013_3005_KCN256A_Zone1-FallingTide-001.spd And the error I receive is: . Complete Converting into cartisian coordinate system index Number of Tiles = 2620 Create Individual tiles Error: Could not create SPD file: /Users/alchrist/documents/currentprojects/stlawrence/lidar_forJeanGabriel//output/tmp/2556.spd spdtranslate - end I mentioned previously that if I remove the temporary file output step it works. However, I found this doesn’t actually solve the issue. This particular step works, but the results spd file has a header issue that causes problems for future steps: Steps to create *binned.spd, *rmnoise.spd, and *pmfgrd.spd all run without problem, but the spddefheight step gives an error: spddefheight --interp -c 250 -r 250 -b 1 --overlap 5 --in NATURAL_NEIGHBOR_CGAL --thin --thinres 0.5 --ptsperbin 1 -i output/intermediate_files/200912_185142_Channel_1_NAD83_CSRS_19N_CGVD2013_3005_KCN256A_Zone1-FallingTide-001_pmfmccgrd.spd -o output/hfile/200912_185142_Channel_1_NAD83_CSRS_19N_CGVD2013_3005_KCN256A_Zone1-FallingTide-001_hgt.spd Error: The SPD major version header value was not provided. spddefheight - end Please let me know if you have any suggestions for solving this issue. I can send another file, but I think the one I sent before has the same problem. Thanks, Alex From: Pete Bunting <petebunt...@mac.com> Date: Wednesday, April 6, 2022 at 2:18 PM To: "Christensen, Alexandra (US 334F-NASA)" <alexandra.l.christen...@jpl.nasa.gov> Cc: "spdlib-develop@lists.sourceforge.net" <spdlib-develop@lists.sourceforge.net> Subject: Re: [EXTERNAL] [spdlib-develop] Spdtranslate error with tmp files HI Alex, I am not sure why that would make a difference and why the issue would only occur with some files. But, if you are happy to share a file that would be great, I will not share and delete it after I’ve debugged the issue. No, you don’t need to worry about those warning unless you want to do something specific with the pulse structure. These errors occur as SPDLib tries to recreate the original pulse structure of the data but pre-processing of the data (e.g., noise filtering, cutting into tiles etc.) often breaking things about this structure in LAS files as it is not a requirement of the file structure. Best wishes, Pete On 6 Apr 2022, at 22:11, Christensen, Alexandra (US 334F-NASA) <alexandra.l.christen...@jpl.nasa.gov<mailto:alexandra.l.christen...@jpl.nasa.gov>> wrote: Hi Pete, I will send you an example file separately. However, I am able to get around the issue if I remove the temporary folder option, but it’s not clear why that works. Also, should I be worried about the many warnings such as: WARNING: Pulse was written as incompleted pulse. Warning: Point ignored. It is the first in pulse but has a return number greater than 1. Thanks, Alex From: Pete Bunting <petebunt...@mac.com<mailto:petebunt...@mac.com>> Date: Wednesday, April 6, 2022 at 2:01 PM To: "Christensen, Alexandra (US 334F-NASA)" <alexandra.l.christen...@jpl.nasa.gov<mailto:alexandra.l.christen...@jpl.nasa.gov>> Cc: "spdlib-develop@lists.sourceforge.net<mailto:spdlib-develop@lists.sourceforge.net>" <spdlib-develop@lists.sourceforge.net<mailto:spdlib-develop@lists.sourceforge.net>> Subject: [EXTERNAL] Re: [spdlib-develop] Spdtranslate error with tmp files Hi Alex, I am not sure. Is it possible for you to share one of the las files which produce the error to see if I can reproduce? Many thanks, Pete On 6 Apr 2022, at 18:45, Christensen, Alexandra (US 334F-NASA) via spdlib-develop <spdlib-develop@lists.sourceforge.net<mailto:spdlib-develop@lists.sourceforge.net>> wrote: Hello, I’ve been running into a new error when processing lidar files with spdlib. Out of several hundred .las files, 2-3 have errors with spdtranslate: spdtranslate --if LAS --of SPD -x LAST_RETURN -t directory/tmp/ -i directory/20210130_210127.las -o directory/output/20210130_210127.spd While running, I get several warnings about incompleted pulse (but this is not unusual). However, after 251 temp files, I get an error: Error: Could not create SPD file: directory/output/tmp/252.spd It doesn’t seem to be a disk space or memory issue as it is not any larger than any other files that run successfully. Thanks, Alex _______________________________________________ spdlib-develop mailing list spdlib-develop@lists.sourceforge.net<mailto:spdlib-develop@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/spdlib-develop<https://urldefense.us/v3/__https:/lists.sourceforge.net/lists/listinfo/spdlib-develop__;!!PvBDto6Hs4WbVuu7!YmAbRFM32PuQndwvAmsfppaYKT68sm9b2aVZMmLerDp-gsdgm1Rx6aJqHm-nxBpooEJ5ItwoSxQaCys$>
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