Glam output - Revision history

Steve-price at 15:42, 1 August 2007

2007-08-01T15:42:18Z

Steve-price at 15:40, 1 August 2007

2007-08-01T15:40:47Z

Tony-payne at 12:10, 27 July 2007

2007-07-27T12:10:20Z

Tony-payne at 12:09, 27 July 2007

2007-07-27T12:09:54Z

Jprenaud: Glam/output moved to Glam output: remove slash from name

2007-07-27T11:58:55Z

Glam/output moved to Glam output: remove slash from name

Tony-payne at 11:30, 27 July 2007

2007-07-27T11:30:06Z

Tony-payne at 11:16, 27 July 2007

2007-07-27T11:16:33Z

Tony-payne at 11:15, 27 July 2007

2007-07-27T11:15:12Z

Tony-payne at 11:02, 27 July 2007

2007-07-27T11:02:29Z

Tony-payne at 10:45, 27 July 2007

2007-07-27T10:45:26Z

New page

= Output from GLAM =

== Selecting output from GLAM ==

GLAM outputs 2d and 3d variables in files glam.2df and glam.3df, respectively. These files are binary and can be read with MATLAB scripts (see below). The interval between output is selected using the variable nout within glam.nml. The three elements of this array contain intervals for point, 2d and 3d output (the first is no longer used). The unit is years. Note that GLAM will also at the first (tstr) and final (tstr+trun) time step irrespective of these settings; the actual time integration loop runs from tstr+tinc until trun is exceeded. The variable nstr can be used to control when output starts in a time-dependent simulation; output will only be written after nstr (in years). This is useful of we are only interested in the equilibrium.

The variables that are output can be selected by editing glam.out. This file contains set two arrays (which2d and which3d). Output for a particular variable is selected if the appropriate entry in the array is 1 (otherwise set to zero). The variables currently available for output are shown in Tables 1 and 2.

Table 1. 3d variables available from GLAM.

Variable Grid Units MATLAB name
1 Horizontal velocity in x Staggered m yr-1 u
2 Horizontal velocity in y Staggered m yr-1 v
3 Vertical velocity Normal m yr-1 w
4 Vertical velocity of grid Normal m yr-1 wg
5 Glen’s A Normal Pa-3 yr-1 a
6 Temperature Normal deg. C t
7 Effective viscosity Normal Pa s evs
8 Effective stress Normal Pa tau
9 Vertical shear stress in x Normal Pa txz
10 Vertical shear stress in y Normal Pa tyz
11 Horizontal shear Normal Pa txy
12 Longitudinal stress deviator in x Normal Pa txx
13 Longitudinal stress deviator in y Normal Pa tyy
14 Gravitational driving stress in x Normal Pa gdx
15 Gravitational driving stress in y Normal Pa gdy
Horizontal distances Both m xn yn xs ys
Vertical distances Both m zn zs

== Viewing output from GLAM in MATALB ==

The GLAM output files can be loaded using MATLAB scripts glam2d.m and glam3d.m. Both are called using [a] = glam3d(N,PATH); (where N is the time step of interest and PATH is the relative location of the output file, e.g. ‘.’ for same directory). These scripts create a MATLAB structure that can be referenced as follows. For 3d output, use a.NAME(I,J,K) where NAME is the variable’s MATLAB name (see Tables 1 and 2), I and J are horizontal indices and K the vertical index. Note that it is often necessary to compress the 3d array to a 2d array for potting purposes using squeeze(). The command imagesc(squeeze(a.txz(:,:,end))) will produce an image of basal traction.

@@ Line 5: / Line 5: @@
 == Selecting output from GLAM ==
-GLAM outputs 2d and 3d variables in files <tt>glam.2df</tt> and <tt>glam.3df</tt>, respectively.  These files are binary and can be read with MATLAB scripts (see below).  The interval between output is selected using the variable <tt>nout</tt> within <tt>glam.nml</tt>.  The three elements of this array contain intervals for point, 2d and 3d output (the first is no longer used).  The unit is years.  Note that GLAM will also output at the first (<tt>tstr</tt>) and final (<tt>tstr+trun</tt>) time step irrespective of these settings; the actual time integration loop runs from <tt>tstr+tinc</tt> until <tt>trun</tt> is exceeded.  The variable <tt>nstrv</tt>  can be used to control when output starts in a time-dependent simulation; output will only be written after <tt>nstr</tt> (in years).  This is useful if we are only interested in the equilibrium.
+GLAM outputs 2d and 3d variables in files <tt>glam.2df</tt> and <tt>glam.3df</tt>, respectively (located in subversion repository "glam-matlab").  These files are binary and can be read with MATLAB scripts (see below).  The interval between output is selected using the variable <tt>nout</tt> within <tt>glam.nml</tt>.  The three elements of this array contain intervals for point, 2d and 3d output (the first is no longer used).  The unit is years.  Note that GLAM will also output at the first (<tt>tstr</tt>) and final (<tt>tstr+trun</tt>) time step irrespective of these settings; the actual time integration loop runs from <tt>tstr+tinc</tt> until <tt>trun</tt> is exceeded.  The variable <tt>nstrv</tt>  can be used to control when output starts in a time-dependent simulation; output will only be written after <tt>nstr</tt> (in years).  This is useful if we are only interested in the equilibrium.
 The variables that are output can be selected by editing <tt>glam.out</tt>.  This file contains two arrays (<tt>which2d</tt> and <tt>which3d</tt>).   Output for a particular variable is selected if the appropriate entry in the array is 1 (otherwise set to zero).  The variables currently available for output are shown in Tables 1 and 2.

← Older revision		Revision as of 15:40, 1 August 2007
Line 52:		Line 52:
	== Viewing output from GLAM in MATLAB ==		== Viewing output from GLAM in MATLAB ==

−	The GLAM output files can be loaded using MATLAB scripts <tt>glam2d.m</tt> and <tt>glam3d.m</tt>. Both are called using <tt>[a] = glam3d(N,PATH);</tt> (where <tt>N</tt> is the time step of interest and <tt>PATH</tt> is the relative location of the output file, e.g. ‘.’ for same directory). These scripts create a MATLAB structure that can be referenced as follows. For 3d output, use <tt>a.NAME(I,J,K)</tt> where <tt>NAME</tt> is the variable’s MATLAB name (see Tables 1 and 2), <tt>I</tt> and <tt>J</tt> are horizontal indices and <tt>K</tt> the vertical index. Note that it is often necessary to compress the 3d array to a 2d array for plotting purposes using <tt>squeeze()</tt>. The command <tt>imagesc(squeeze(a.txz(:,:,end)))</tt> will produce an image of basal traction.	+	The GLAM output files can be loaded using MATLAB scripts <tt>glam2d.m</tt> and <tt>glam3d.m</tt>. Both are called using <tt>[a] = glam3d(N,'PATH');</tt> (where <tt>N</tt> is the time step of interest and <tt>PATH</tt> is the relative location of the output file, e.g. ‘.’ for same directory). These scripts create a MATLAB structure that can be referenced as follows. For 3d output, use <tt>a.NAME(I,J,K)</tt> where <tt>NAME</tt> is the variable’s MATLAB name (see Tables 1 and 2), <tt>I</tt> and <tt>J</tt> are horizontal indices and <tt>K</tt> the vertical index. Note that it is often necessary to compress the 3d array to a 2d array for plotting purposes using <tt>squeeze()</tt>. The command <tt>imagesc(squeeze(a.txz(:,:,end)))</tt> will produce an image of basal traction.

@@ Line 17: / Line 17: @@
 | 2||Horizontal velocity in y||Staggered||m yr<sup>-1</sup>||v
 |-
-| 3||Vertical velocity||Normal||m yr<sup>-1</sup>||w|
+| 3||Vertical velocity||Normal||m yr<sup>-1</sup>||w
 |-
 | 4||Vertical velocity of grid||Normal||m yr<sup>-1</sup>||wg

@@ Line 43: / Line 43: @@
 | 15||Gravitational driving stress in y||Normal||Pa||gdy
 |-
-| ||Horizontal distances||Both||m||vxn yn xs ys
+| ||Horizontal distances||Both||m|| xn yn xs ys
 |-
 | ||Vertical distances||Both||m||zn zs

@@ Line 33: / Line 33: @@
 | 10||Vertical shear stress in y||Normal||Pa||tyz
 |-
-| 11||Horizontal shear||Normal||Pa||txy
+| 11||Horizontal shear stress||Normal||Pa||txy
 |-
 | 12||Longitudinal stress deviator in x||Normal||Pa||txx

← Older revision	Revision as of 11:58, 27 July 2007
(No difference)

← Older revision		Revision as of 11:16, 27 July 2007
Line 1:		Line 1:
		+	[[Category:glam]]
		+
	= Output from GLAM =		= Output from GLAM =

@@ Line 3: / Line 3: @@
 == Selecting output from GLAM ==
-GLAM outputs 2d and 3d variables in files glam.2df and glam.3df, respectively.  These files are binary and can be read with MATLAB scripts (see below).  The interval between output is selected using the variable nout within glam.nml.  The three elements of this array contain intervals for point, 2d and 3d output (the first is no longer used).  The unit is years.  Note that GLAM will also at the first (tstr) and final (tstr+trun) time step irrespective of these settings; the actual time integration loop runs from tstr+tinc until trun is exceeded.  The variable nstr can be used to control when output starts in a time-dependent simulation; output will only be written after nstr (in years).  This is useful of we are only interested in the equilibrium.
+GLAM outputs 2d and 3d variables in files <tt>glam.2df</tt> and <tt>glam.3df</tt>, respectively.  These files are binary and can be read with MATLAB scripts (see below).  The interval between output is selected using the variable <tt>nout</tt> within <tt>glam.nml</tt>.  The three elements of this array contain intervals for point, 2d and 3d output (the first is no longer used).  The unit is years.  Note that GLAM will also output at the first (<tt>tstr</tt>) and final (<tt>tstr+trun</tt>) time step irrespective of these settings; the actual time integration loop runs from <tt>tstr+tinc</tt> until <tt>trun</tt> is exceeded.  The variable <tt>nstrv</tt>  can be used to control when output starts in a time-dependent simulation; output will only be written after <tt>nstr</tt> (in years).  This is useful if we are only interested in the equilibrium.
-The variables that are output can be selected by editing glam.out.  This file contains set two arrays (which2d and which3d).   Output for a particular variable is selected if the appropriate entry in the array is 1 (otherwise set to zero).  The variables currently available for output are shown in Tables 1 and 2.
+The variables that are output can be selected by editing <tt>glam.out</tt>.  This file contains two arrays (<tt>which2d</tt> and <tt>which3d</tt>).   Output for a particular variable is selected if the appropriate entry in the array is 1 (otherwise set to zero).  The variables currently available for output are shown in Tables 1 and 2.
 {| border="1"
-|+ Table 1.  3d variables available from GLAM.
+|+ '''Table 1.  3d variables available from GLAM.'''
 | || Variable || Grid || Units || MATLAB name
 |-
-| 1 || Horizontal velocity in x || Staggered || m yr-1 || u
+| 1 || Horizontal velocity in x || Staggered || m yr<sup>-1 </sup>|| u
 |-
-| 2||Horizontal velocity in y||Staggered||m yr-1||v
+| 2||Horizontal velocity in y||Staggered||m yr<sup>-1</sup>||v
 |-
-| 3||Vertical velocity	Normal||m yr-1||w|
+| 3||Vertical velocity||Normal||m yr<sup>-1</sup>||w|
 |-
-| 4||Vertical velocity of grid||Normal||m yr-1||wg
+| 4||Vertical velocity of grid||Normal||m yr<sup>-1</sup>||wg
 |-
-| 5||Glen’s A||NormalvPa-3 yr-1||a
+| 5||Glen’s A||Normal||Pa<sup>-3</sup> yr<sup>-1</sup>||a
 |-
 | 6||Temperature||Normal||deg. C||t
@@ Line 46: / Line 46: @@
 |}
-== Viewing output from GLAM in MATALB ==
+== Viewing output from GLAM in MATLAB ==
-The GLAM output files can be loaded using MATLAB scripts glam2d.m and glam3d.m.  Both are called using [a] = glam3d(N,PATH); (where N is the time step of interest and PATH is the relative location of the output file, e.g. ‘.’ for same directory).  These scripts create a MATLAB structure that can be referenced as follows.  For 3d output, use a.NAME(I,J,K) where NAME is the variable’s MATLAB name (see Tables 1 and 2), I and J are horizontal indices and K the vertical index.  Note that it is often necessary to compress the 3d array to a 2d array for potting purposes using squeeze().  The command imagesc(squeeze(a.txz(:,:,end))) will produce an image of basal traction.
+The GLAM output files can be loaded using MATLAB scripts <tt>glam2d.m</tt> and <tt>glam3d.m</tt>.  Both are called using <tt>[a] = glam3d(N,PATH);</tt> (where <tt>N</tt> is the time step of interest and <tt>PATH</tt> is the relative location of the output file, e.g. ‘.’ for same directory).  These scripts create a MATLAB structure that can be referenced as follows.  For 3d output, use <tt>a.NAME(I,J,K)</tt> where <tt>NAME</tt> is the variable’s MATLAB name (see Tables 1 and 2), <tt>I</tt> and <tt>J</tt> are horizontal indices and <tt>K</tt> the vertical index.  Note that it is often necessary to compress the 3d array to a 2d array for plotting purposes using <tt>squeeze()</tt>.  The command <tt>imagesc(squeeze(a.txz(:,:,end)))</tt> will produce an image of basal traction.

@@ Line 7: / Line 7: @@
 The variables that are output can be selected by editing glam.out.  This file contains set two arrays (which2d and which3d).   Output for a particular variable is selected if the appropriate entry in the array is 1 (otherwise set to zero).  The variables currently available for output are shown in Tables 1 and 2.
-Table 1.  3d variables available from GLAM.
+{| border="1"
+|+ Table 1.  3d variables available from GLAM.
-	Variable	Grid	Units	MATLAB name
+| || Variable || Grid || Units || MATLAB name
-	Horizontal velocity in x	Staggered	m yr-1	u
+|-
-	Horizontal velocity in y	Staggered	m yr-1	v
+| 1 || Horizontal velocity in x || Staggered || m yr-1 || u
-	Vertical velocity	Normal	m yr-1	w
+|-
-	Vertical velocity of grid	Normal	m yr-1	wg
+| 2||Horizontal velocity in y||Staggered||m yr-1||v
-	Glen’s A	Normal	Pa-3 yr-1	a
+|-
-	Temperature	Normal	deg. C	t
+| 3||Vertical velocity	Normal||m yr-1||w|
-	Effective viscosity	Normal	Pa s	evs
+|-
-	Effective stress	Normal	Pa	tau
+| 4||Vertical velocity of grid||Normal||m yr-1||wg
-	Vertical shear stress in x	Normal	Pa	txz
+|-
-	Vertical shear stress in y	Normal	Pa	tyz
+| 5||Glen’s A||NormalvPa-3 yr-1||a
-	Horizontal shear	Normal	Pa	txy
+|-
-	Longitudinal stress deviator in x	Normal	Pa	txx
+| 6||Temperature||Normal||deg. C||t
-	Longitudinal stress deviator in y	Normal	Pa	tyy
+|-
-	Gravitational driving stress in x	Normal	Pa	gdx
+| 7||Effective viscosity||Normal||Pa s||evs
-	Gravitational driving stress in y	Normal	Pa	gdy
+|-
-	Horizontal distances	Both	m	xn yn xs ys
+| 8||Effective stress||Normal||Pa||tau
-	Vertical distances	Both	m	zn zs
+|-