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From: | anonymous |
Subject: | [Octave-bug-tracker] [bug #45541] Automatically scale values before plotting |
Date: | Mon, 13 Jul 2015 11:56:09 +0000 |
User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:39.0) Gecko/20100101 Firefox/39.0 |
URL: <http://savannah.gnu.org/bugs/?45541> Summary: Automatically scale values before plotting Project: GNU Octave Submitted by: None Submitted on: mån 13 jul 2015 11.56.08 Category: Plotting with OpenGL Severity: 3 - Normal Priority: 5 - Normal Item Group: Incorrect Result Status: None Assigned to: None Originator Name: Originator Email: Open/Closed: Open Discussion Lock: Any Release: 3.8.1 Operating System: Any _______________________________________________________ Details: This is a known problem but it has a solution: >From the manual Caution: The FLTK toolkit uses single precision variables internally which limits the maximum value that can be displayed to approximately 10^{38}. If your data contains larger values you must use the gnuplot toolkit which supports values up to 10^{308}. The solution is to not pass values directly to FLTK. First scale them to fit within [-1,1] and draw the axis with labels formatted from the original values. The choice of feeding directly have other bad effects which occurs for time series with a fairly large offset (see figure). It is strange that line drawing is affected but not points. _______________________________________________________ File Attachments: ------------------------------------------------------- Date: mån 13 jul 2015 11.56.08 Name: skärmdump1.png Size: 17 kB By: None Figure illustrating the bug <http://savannah.gnu.org/bugs/download.php?file_id=34430> _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?45541> _______________________________________________ Meddelandet skickades via/av Savannah http://savannah.gnu.org/
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