[GRASS-user] How to plot arrows style of speed and direction of wind...

Dear grass user

Recently, I am feeling sorry for many questions....

I'm looking for how to plot arrows of speed and direction of wind.
for example, if station A has 4m/s and Eest (degree 90 )of annual average wind
situation,
the plot like arrow style;
<----xA
Other hand, if station B has 2m/s and West (degree 270 ) of annal average wind
situation,
the plot also like arrow style:
Bx-->
...and so on.

In this case, data set is as follows;

station | lat | lon | w.speed | w.direction |
tokyo | 35.2| 25.4| 4.0 | 90 |
osaka | 24.5| 33.9| 2.0 | 270 |
...

w.speed is single and w.direction is integer. Wind direciotn ranges between 1
(=north), 90 (=east), 180 (=south), 270 (=west) and 360 (=north).

I think that this data set can import to vector data by using v.in.ascii...
So, I'm looking for command -- d.vect --, but can not find to arrows style of
speed and direction of wind...I think that it is difficult to show an arrow st
yle by using two properties (=two columns, speed and direction )....

Please teach me if there is profitable information...

Yasuo shimada ( japan weather association )

On 23/06/11 16:03, sgw00412@nifty.com wrote:

Dear grass user

Recently, I am feeling sorry for many questions....

I'm looking for how to plot arrows of speed and direction of wind.
for example, if station A has 4m/s and Eest (degree 90 )of annual average wind
  situation,
the plot like arrow style;
<----xA
Other hand, if station B has 2m/s and West (degree 270 ) of annal average wind
  situation,
the plot also like arrow style:
Bx-->
...and so on.

In this case, data set is as follows;

station | lat | lon | w.speed | w.direction |
tokyo | 35.2| 25.4| 4.0 | 90 |
osaka | 24.5| 33.9| 2.0 | 270 |
...

w.speed is single and w.direction is integer. Wind direciotn ranges between 1
(=north), 90 (=east), 180 (=south), 270 (=west) and 360 (=north).

I think that this data set can import to vector data by using v.in.ascii...
So, I'm looking for command -- d.vect --, but can not find to arrows style of
speed and direction of wind...I think that it is difficult to show an arrow st
yle by using two properties (=two columns, speed and direction )....

You can use rot_column to define rotation and size_colum to define size
depending on speed. But this is size, not length...

Use icon= for defining a symbol (see [1] for examples).

But you might be better off using a raster approach and d.rast.arrow.
See example at [2].

Or check out Hamish' d.barb AddOn module [3].

Moritz

[1] http://grass.osgeo.org/wiki/IconSymbols
[2] http://grass.osgeo.org/wiki/Meteorology
[3] http://grass.osgeo.org/wiki/GRASS_AddOns#d.barb

Dear Moritz and all

Thank you for useful advices !

Method [2] succeeded. However, the resolution should be small, and it devise it
a little more.

Method [3] failed in the installation.
I have improved two files --Module.make, Grass.make-- referring to a past log.
However, the installation failed with the following message;

/usr/bin/install -c /usr/lib/grass64 /bin/d.barb /usr/lib/grass64/bin/

Best

Yasuo shimada
----------

Use icon= for defining a symbol (see [1] for examples).

But you might be better off using a raster approach and d.rast.arrow.
See example at [2].

Or check out Hamish' d.barb AddOn module [3].

Moritz

[1] http://grass.osgeo.org/wiki/IconSymbols
[2] http://grass.osgeo.org/wiki/Meteorology
[3] http://grass.osgeo.org/wiki/GRASS_AddOns#d.barb

I tried [2] and [3].

[2]

Moritz Lennert <mlennert@club.worldonline.be>さん:

On 23/06/11 16:03, sgw00412@nifty.com wrote:
> Dear grass user
>
> Recently, I am feeling sorry for many questions....
>
> I'm looking for how to plot arrows of speed and direction of wind.
> for example, if station A has 4m/s and Eest (degree 90 )of annual average

wind

> situation,
> the plot like arrow style;
> <----xA
> Other hand, if station B has 2m/s and West (degree 270 ) of annal average

wind

> situation,
> the plot also like arrow style:
> Bx-->
> ...and so on.
>
> In this case, data set is as follows;
>
> station | lat | lon | w.speed | w.direction |
> tokyo | 35.2| 25.4| 4.0 | 90 |
> osaka | 24.5| 33.9| 2.0 | 270 |
> ...
>
> w.speed is single and w.direction is integer. Wind direciotn ranges between

1

> (=north), 90 (=east), 180 (=south), 270 (=west) and 360 (=north).
>
> I think that this data set can import to vector data by using v.in.ascii...
> So, I'm looking for command -- d.vect --, but can not find to arrows style

of

> speed and direction of wind...I think that it is difficult to show an arrow

st

> yle by using two properties (=two columns, speed and direction )....

You can use rot_column to define rotation and size_colum to define size
depending on speed. But this is size, not length...

Use icon= for defining a symbol (see [1] for examples).

But you might be better off using a raster approach and d.rast.arrow.
See example at [2].

Or check out Hamish' d.barb AddOn module [3].

Moritz

[1] http://grass.osgeo.org/wiki/IconSymbols
[2] http://grass.osgeo.org/wiki/Meteorology
[3] http://grass.osgeo.org/wiki/GRASS_AddOns#d.barb

Dear grass user

I succeeded in installing add-on, d.barb.
The procedure of the installation is shown below (1) - (5).
I show the map drawn by the sample data.
http://homepage1.nifty.com/8856/g20110220.png

I wish to express my gratitude to Mr. Hmish who made wonderful add-on.
Thank you !!

Best
Yasuo shimada

---
(1) upgrade grass
6.4.0 upgrade to 6.4.1

(2) install grass.dev

(3) installsubversion

(4) correct two make files
/usr/lib/grass64/make
Platform.make
Grass.make

http://www.mail-archive.com/grass-user@lists.osgeo.org/msg16723.html

---Platform.make---
# platform specific dirs
ARCH_DISTDIR = $(GRASS_HOME)/dist.$(ARCH)
ARCH_BINDIR = $(GRASS_HOME)/bin.$(ARCH)
ERRORLOG = $(GRASS_HOME)/error.log

with

ARCH_DISTDIR = $(GRASS_HOME)
ARCH_BINDIR = $(GRASS_HOME)/bin

---Grass.make--
# GRASS dirs
GRASS_HOME = /build/buildd/grass-6.4.0
RUN_GISBASE = /build/buildd/grass-6.4.0/dist.i486-pc-linux-gnu

with

# GRASS dirs
GRASS_HOME = /usr/lib/grass64
# not sure what should be here since
/usr/lib/grass64/dist.i486-pc-linux-gnu does not exist:
RUN_GISBASE = /usr/lib/grass64
---

(5) install (g.exetnsion extension=d.barb) with su

-----------------------------------

SGW00412@nifty.comさん:

Dear Moritz and all

Thank you for useful advices !

Method [2] succeeded. However, the resolution should be small, and it devise

it

a little more.

Method [3] failed in the installation.
I have improved two files --Module.make, Grass.make-- referring to a past log.
However, the installation failed with the following message;

/usr/bin/install -c /usr/lib/grass64 /bin/d.barb /usr/lib/grass64/bin/

Best

Yasuo shimada
----------
> Use icon= for defining a symbol (see [1] for examples).
>
> But you might be better off using a raster approach and d.rast.arrow.
> See example at [2].
>
> Or check out Hamish' d.barb AddOn module [3].
>
> Moritz
>
> [1] http://grass.osgeo.org/wiki/IconSymbols
> [2] http://grass.osgeo.org/wiki/Meteorology
> [3] http://grass.osgeo.org/wiki/GRASS_AddOns#d.barb

I tried [2] and [3].

[2]

Moritz Lennert <mlennert@club.worldonline.be>さん:
> On 23/06/11 16:03, sgw00412@nifty.com wrote:
> > Dear grass user
> >
> > Recently, I am feeling sorry for many questions....
> >
> > I'm looking for how to plot arrows of speed and direction of wind.
> > for example, if station A has 4m/s and Eest (degree 90 )of annual average
wind
> > situation,
> > the plot like arrow style;
> > <----xA
> > Other hand, if station B has 2m/s and West (degree 270 ) of annal average
wind
> > situation,
> > the plot also like arrow style:
> > Bx-->
> > ...and so on.
> >
> > In this case, data set is as follows;
> >
> > station | lat | lon | w.speed | w.direction |
> > tokyo | 35.2| 25.4| 4.0 | 90 |
> > osaka | 24.5| 33.9| 2.0 | 270 |
> > ...
> >
> > w.speed is single and w.direction is integer. Wind direciotn ranges

between

1
> > (=north), 90 (=east), 180 (=south), 270 (=west) and 360 (=north).
> >
> > I think that this data set can import to vector data by using v.in.ascii...
> > So, I'm looking for command -- d.vect --, but can not find to arrows style
of
> > speed and direction of wind...I think that it is difficult to show an

arrow

st
> > yle by using two properties (=two columns, speed and direction )....
>
> You can use rot_column to define rotation and size_colum to define size
> depending on speed. But this is size, not length...
>
> Use icon= for defining a symbol (see [1] for examples).
>
> But you might be better off using a raster approach and d.rast.arrow.
> See example at [2].
>
> Or check out Hamish' d.barb AddOn module [3].
>
> Moritz
>
> [1] http://grass.osgeo.org/wiki/IconSymbols
> [2] http://grass.osgeo.org/wiki/Meteorology
> [3] http://grass.osgeo.org/wiki/GRASS_AddOns#d.barb