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#44: Narrow spikes missed on trace
View
(Anonymous)
issuedata
Classification:
Feature
Topic:
UI
Importance:
Medium
Assigned to:
Created by: randall
Created at: 2007-05-31
progress
Deadline:
2007-05-31 14:26
Hours estimated:
0
Hours needed:
0
Percent done:
0
contact
Name:
Randall Britten
Description:
If a trace has a narrow spike, it may be missed when time scale is zoomed out. Example: beeler_reuter_1977_version04, Istim vs time. Platform: Windows Vista and Linux Version: on Windows: Snapshot: pcenv-installer-snap20070521 on Linux: Snapshot: pcenv-snap20070531 and pcenv-snap20070518
Transcript
#3:
2007-06-05 15:11 (randall)
status: "accepted" ->
"defered"
status: "rejected" ->
"accepted"
classification: "Bug" ->
"Feature"
status: "rejected" ->
"accepted"
Matlab shows the min and max values out of all the data values that map to the same x-pixel coordinate. This seems like a sensible approach. Other more advanced approaches are possible, for example varying colour intensity according to the density of data points (i.e. like a histogram rendered where colour intensity increases with "frequency"). Still seems like a bug to me, so lets compromise and call it a feature request.
#2:
2007-06-05 14:01 (miller)
status: "pending" ->
"rejected"
I'm not sure that this is really a bug as much as a feature (when you zoom out, you expect that less detail will be shown). PCEnv deliberately limits the number of points it will ever attempt to plot in order to keep the UI responsiveness reasonable. We could pick and choose those points based on their numerical values, but in every case we will still lose some detail off the graph.
#1:
2007-05-31 14:57 (randall)
topic: "" ->
"UI"
title: "" ->
"Narrow spikes missed on trace"
description: "" ->
"If a trace has a narrow spike, it may be missed when time scale is zoomed out.
Example: beeler_reuter_1977_version04, Istim vs time.
Platform: Windows Vista and Linux
Version:
on Windows: Snapshot: pcenv-installer-snap20070521
on Linux: Snapshot: pcenv-snap20070531 and pcenv-snap20070518
"
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