Details Ticket 1895


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Serial Number 1895
Subject d.pan: sets new region by raster grid resolution
Area bug
Queue grass
Requestors hamish_nospam@yahoo.com
Owner none
Status stalled
Last User Contact Fri May 23 15:20:33 2003 (5 yr ago)
Current Priority 20
Final Priority 70
Due No date assigned
Last Action Mon Sep 20 06:38:14 2004 (4 yr ago)
Created Fri May 23 14:23:37 2003 (5 yr ago)

Transaction History Ticket 1895


Fri, May 23 2003 14:23:37    Request created by guest  
Subject: d.pan: sets new region by raster grid resolution

Platform: GNU/Linux/i386
grass obtained from: Trento Italy site
grass binary for platform: Compiled from Sources
GRASS Version: 5.0.2

I don't know if this is an intended feature or a bug, but:

While working with a mapset that consists of fine scale vectors and points only,
with the (unused) region resolution set to fairly coarse...

Next, zoom in on a feature.

d.pan will only reposition along the raster grid, not on the mouse click. (in
my case this was a clicking around and nothing happens, until you get to the
edge of the screen, when it would jump a lot)

clicking the middle mouse button for position shows this behaviour as well.
maybe the module shouldn't be so raster-centric? especially for 5.1 ..
If the resolution was greater than the region, d.pan might appear to 'fail' for
no reason.

I was working in Lat/Lon, fwtw


e.g.
src/display/d.pan/center.c:

	screen_y = (int) D_u_to_d_row (north);
	screen_x = (int) D_u_to_d_col (east);

	t = (window->north - north) / window->ns_res;
	north = window->north - (t+.5) * window->ns_res;

	t = (window->east - east) / window->ew_res;
	east = window->east - (t+.5) * window->ew_res;



comments?


Hamish

Fri, May 23 2003 15:20:33    Mail sent by blazek@itc.it  
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From Radim Blazek <blazek@itc.it>
To Request Tracker <grass-bugs@intevation.de>, grass5@grass.itc.it
Subject Re: [GRASS5] [bug #1895] (grass) d.pan: sets new region by raster grid resolution
Date Fri, 23 May 2003 15:20:25 +0200
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d.zoom -f can also pan.

Radim

On Friday 23 May 2003 14:23, Request Tracker wrote:
> this bug's URL: http://intevation.de/rt/webrt?serial_num=1895
> -------------------------------------------------------------------------
>
> Subject: d.pan: sets new region by raster grid resolution
>
> Platform: GNU/Linux/i386
> grass obtained from: Trento Italy site
> grass binary for platform: Compiled from Sources
> GRASS Version: 5.0.2
>
> I don't know if this is an intended feature or a bug, but:
>
> While working with a mapset that consists of fine scale vectors and points
> only, with the (unused) region resolution set to fairly coarse...
>
> Next, zoom in on a feature.
>
> d.pan will only reposition along the raster grid, not on the mouse click.
> (in my case this was a clicking around and nothing happens, until you get
> to the edge of the screen, when it would jump a lot)
>
> clicking the middle mouse button for position shows this behaviour as well.
>
>
> maybe the module shouldn't be so raster-centric? especially for 5.1 ..
> If the resolution was greater than the region, d.pan might appear to 'fail'
> for no reason.
>
> I was working in Lat/Lon, fwtw
>
>
> e.g.
> src/display/d.pan/center.c:
>
> 	screen_y = (int) D_u_to_d_row (north);
> 	screen_x = (int) D_u_to_d_col (east);
>
> 	t = (window->north - north) / window->ns_res;
> 	north = window->north - (t+.5) * window->ns_res;
>
> 	t = (window->east - east) / window->ew_res;
> 	east = window->east - (t+.5) * window->ew_res;
>
>
>
> comments?
>
>
> Hamish


Mon, Sep 20 2004 06:38:14    Status changed to stalled by hbowman  
Mon, Sep 20 2004 06:38:14    Comments added by hbowman  
'd.zoom -p' supersedes d.pan in GRASS 5.7.

bug status: "wont fix"


Hamish
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