I'm creating SGV files that will be used as pins on an open streets map, map.

I need to set the center point/(0,0) at the bottom center so that the pin gets located at the right point on the map. The dev. doing the map part of this can offset the location to adjust for this but it means more computations (potentially 100s of pin points) and slower load times.

Terrence.

Hi doctorSpoc

As a new Inkscape user; as far as I know there are no way to do this from Inkscape.
(Hopefully someone with more knowledge will "chime in" on this thread).
It is however fully possible to do this by modifying the SVG file manually or by a program.
To test I created a page 100x100 pixels in Inkscape and created a vertical arrow with the arrowhead at the bottom - midway across the page.
( Inkscape coordinates x=50 and y=0 ).
By editing the saved SVG file with a g-tag I "moved" the arrow to the lower left corner.
"<g> transform="translate(-50,-952.36218) </g>" (The -952 is a "leftover" from starting Inkscape with an A4 page)
Both arrows got the exact same data.

For more info on SVG transforms see the spec; http://www.w3.org/TR/SVG/coords.html - scroll down to the Example NewCoordSys section
Be aware that the origin (0,0) of a SVG page is the upper left corner whereas the Inkscape screen (0,0) is the lower left corner.

Good Luck!
RGDS
Ragnar

Hi.

What happened to the original third post in this thread - the solution was far better than mine and now it's gone!!

RGDS
Ragnar

Hi Pilosopong Tasyo.

Off topic:
Hi ragstian. You were probably referring to my reply. I deleted it after realizing that my answer may have been totally irrelevant to the OP's problem. The first time I read it, I focused on the keywords "center point" skipping the other stuff, hence posting a technique/workaround I would use. I only noticed several hours later when I got back to the forum that the topic was posted under the SVG/XML Code sub-forum (totally different ballgame vis-a-vis to the Help with using Inkscape sub-forum), and re-reading the original post a few more times about pins and street maps gave me the impression that my advice was probably no good under the circumstance. So, I decided to remove it.

It's no biggie reposting my reply. Before I deleted it, I copied and saved it to my computer, along with the screencaps, for those "just in case" moments. I'm still not sure if it is relevant, though. So, if it doesn't help in addressing the OP's question, just ignore it.

This is quite funny! After reading your original reply with the ingenious workaround I came to the conclusion that my reply was irrelevant and looked for a way to delete it!
I figured it could not be deleted as it was not the last post on the thread.

Keep up the good work!
RGDS
Ragnar

Hi brynn.

This is what I see on my own posts: - no delete icon!
(If my message are the last one in a thread then the x is there.)

Out of curiosity; can you explain what the different icons to the left of the thread topic is supposed to show;
Some are black, some are red and some got "scrolling text", I have not been able to find any info on the board FAQ side about this.
Might be self-explanatory but my brain is not that good! (and never was!)

RGDS
Ragnar

PS - I don't know why the OT tags aren't working.

brynn wrote:

Off topic:

Hi Ragnar,
Wow, I'm shocked! ....

PS - I don't know why the OT tags aren't working.

Ah-HA! The OT tags don't work in the prosilver theme! So the prosilver theme must have some bugs, I guess. So oh well, back to the orange

Thanks for the help guys... much appreciated!

Using either of these two methods, how do I get the portion of the icon that is now outside of the "viewport" (?) to not get cut off when it gets displayed?

just a note, I'm a total newbie to this, so the more detail you can provide the better.

doctorSpoc wrote:Using either of these two methods, how do I get the portion of the icon that is now outside of the "viewport" (?) to not get cut off when it gets displayed?

Well, that was my concern from the very beginning, which is why I didn't reply to the original topic. Of course you can easily hide the page border (Doc Props). But in some situations, depending on how the image will either be used, or be displayed, only the parts of the image that lie within the border are visible, whether the border itself is visible or not. So if you need this to remain an SVG file, using 0,0 for the center of the drawing, there's no way to have the whole drawing inside the border.

If you were able to use a PNG though.... Of course with the border hidden, you can export the whole drawing, no matter where it lies on the page. I've never experimented with the x0, y0, x1, y1 settings. But it looks like you could adjust the export so that 0,0 is where you want it. Although note that I may not have the correct understanding of those settings....but without consulting the manual, that's what it looks like to me.

Or....I have no idea what are the requirements of the map guy. It sounds like maybe he's going to have a script, or some way of automating the placement of the pins, which he wants to define as 0,0. If there were some kind of manual placement as an option, perhaps some of Inkscape's snapping features (which recently have become quite sophisticated!) could be used to guide the placement. For example, "snapping to and from the midpoint of bounding box edges" is exactly what you're describing!

Or....well, if he is indeed using a script or something like it, couldn't he set the alignment coordinates to anything? I mean, if the code says "put the pin at (0,0)", couldn't he change that to "put the pin at (20,0)??

Ok, so there's a bit of brainstorming, for whatever it's worth