Re: setting vector head shape
Paul Wessel <[email protected]> Thu, 28 Aug 2014 08:50:49 -1000
| Newsgroups | gmane.comp.gis.gmt.user |
|---|---|
| Message-ID | <[email protected]> |
--Apple-Mail=_20DE2F88-89F5-4DE2-80FC-10B5F9000A6E Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii You can use the +a<angle> modifier to increase the angle at the vector = head apex. it defaults to 30 degrees. Giving it 150 and a shorter = length might work. -p On Aug 28, 2014, at 8:23 AM, Eric Lindsey <[email protected]> wrote: > Dear all, >=20 > Is it possible in GMT5 to control the shape of vector heads? I'd like = to make a short, fat vector with a head wider than the bar, but keep = finding that the shorter it gets, the smaller the head becomes (even if = I don't set the +n option...). I can make the bar thick (eg. using = -W25p), but the head remains the same size, leaving me with a head = that's thinner than the bar! For example: >=20 > echo "0 0 1 .5 " |gmt psvelo -Jx0.4/0.4 -R-10/10/-10/10 -B2g10 -W25p = -L -Se3/0/18 -A30p+e -P -V > test.ps >=20 > Changing the head size directly (eg. -A90p+e) makes the head wider, = but too long. Ideally, I'd like to make something more like this arrow: >=20 > = http://www.wpclipart.com/blanks/arrows/arrows_BW/arrow_hollow_right.png >=20 > I'm stumped -- there must be a clean way to do this. >=20 > Eric > Mailing list for GMT discussions of all kinds. If you are not sure you = have found a bug, discuss it here first. To formally report bugs or = request features, please register and add New Issue on = gmt.soest.hawaii.edu To unsubscribe, send the message "signoff gmt-help" = to [email protected] Note: gmt-help will become obsolete on Sept = 1, 2014 - please use forum on gmt.soest.hawaii.edu instead. Mailing list for GMT discussions of all kinds. If you are not sure you have found a bug, discuss it here first. To formally report bugs or request features, please register and add New Issue on gmt.soest.hawaii.edu To unsubscribe, send the message "signoff gmt-help" to [email protected] Note: gmt-help will become obsolete on Sept 1, 2014 - please use forum on gmt.soest.hawaii.edu instead. --Apple-Mail=_20DE2F88-89F5-4DE2-80FC-10B5F9000A6E Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">You = can use the +a<angle> modifier to increase the angle at the vector = head apex. it defaults to 30 degrees. Giving it 150 and a shorter = length might work.<div>-p</div><div><br><div><div>On Aug 28, 2014, at = 8:23 AM, Eric Lindsey <<a = href=3D"mailto:[email protected]">[email protected]</a>> = wrote:</div><br class=3D"Apple-interchange-newline"><blockquote = type=3D"cite"><div dir=3D"ltr">Dear all,<div><br></div><div>Is it = possible in GMT5 to control the shape of vector heads? I'd like to make = a short, fat vector with a head wider than the bar, but keep finding = that the shorter it gets, the smaller the head becomes (even if I don't = set the +n option...). I can make the bar thick (eg. using -W25p), but = the head remains the same size, leaving me with a head that's thinner = than the bar! For example:</div> <div><br></div><div>echo "0 0 1 .5 " |gmt psvelo -Jx0.4/0.4 = -R-10/10/-10/10 -B2g10 -W25p -L -Se3/0/18 -A30p+e -P -V > <a = href=3D"http://test.ps/">test.ps</a><br></div><div><br></div><div>Changing= the head size directly (eg. -A90p+e) makes the head wider, but too = long. Ideally, I'd like to make something more like this arrow:</div> <div><br></div><div><a = href=3D"http://www.wpclipart.com/blanks/arrows/arrows_BW/arrow_hollow_righ= t.png">http://www.wpclipart.com/blanks/arrows/arrows_BW/arrow_hollow_right= .png</a><br></div><div><br></div><div>I'm stumped -- there must be a = clean way to do this.</div> <div><br></div><div>Eric<br></div></div> Mailing list for GMT discussions of all kinds. If you are not sure you = have found a bug, discuss it here first. To formally report bugs or request features, please register and add New = Issue on <a href=3D"http://gmt.soest.hawaii.edu">gmt.soest.hawaii.edu</a> To unsubscribe, send the message "signoff gmt-help" to <a = href=3D"mailto:[email protected]">[email protected]</a> Note: gmt-help will become obsolete on Sept 1, 2014 - please use forum = on <a href=3D"http://gmt.soest.hawaii.edu">gmt.soest.hawaii.edu</a> = instead. </blockquote></div><br></div></body></html>= Mailing list for GMT discussions of all kinds. If you are not sure you have found a bug, discuss it here first. To formally report bugs or request features, please register and add New Issue on gmt.soest.hawaii.edu To unsubscribe, send the message "signoff gmt-help" to <a href=3D"mailto:[email protected]">[email protected]</a> Note: gmt-help will become obsolete on Sept 1, 2014 - please use forum on gmt.soest.hawaii.edu instead. --Apple-Mail=_20DE2F88-89F5-4DE2-80FC-10B5F9000A6E--