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From: | anonymous |
Subject: | [Octave-bug-tracker] [bug #55502] Reading error with function 'rasterread' |
Date: | Thu, 17 Jan 2019 14:15:06 -0500 (EST) |
User-agent: | Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/17.17134 |
URL: <https://savannah.gnu.org/bugs/?55502> Summary: Reading error with function 'rasterread' Project: GNU Octave Submitted by: None Submitted on: Thu 17 Jan 2019 07:15:04 PM UTC Category: None Severity: 3 - Normal Priority: 5 - Normal Item Group: Inaccurate Result Status: None Assigned to: None Originator Name: Anthony Jewell Originator Email: address@hidden Open/Closed: Open Discussion Lock: Any Release: 4.4.1 Operating System: Microsoft Windows _______________________________________________________ Details: The sample lidar data file was exported for QGIS from a larger Lidar layer. It is 300x300px 'single' float32. The file reads back into QGIS correctly and also displays correctly in a Python script and IrfanView . A reduced precision uint8 .png version displays correctly in Octave an any other imaging app. See thumbnail 'actualImage.png' attached When input into Octave via raster read the displayed image is rotated counter clockwise from the correct OS map orientation by 20 to 30 degrees and also appears to be clipped although it is 300x300px and the metadata appears to be correct. See 'displayedImage.png' attached. The script rasterreadProblem.m generates the incorrect image. I cannot attach the test data 'FernhurstDTM1mSU8828.tif' as it is 325kB. I could email it. _______________________________________________________ File Attachments: ------------------------------------------------------- Date: Thu 17 Jan 2019 07:15:04 PM UTC Name: rasterreadProblem.m Size: 1KiB By: None <http://savannah.gnu.org/bugs/download.php?file_id=45995> ------------------------------------------------------- Date: Thu 17 Jan 2019 07:15:04 PM UTC Name: actualImage.png Size: 10KiB By: None <http://savannah.gnu.org/bugs/download.php?file_id=45996> ------------------------------------------------------- Date: Thu 17 Jan 2019 07:15:04 PM UTC Name: imageDisplayed.png Size: 10KiB By: None <http://savannah.gnu.org/bugs/download.php?file_id=45997> _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?55502> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/
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