Shiyin's note - 用户贡献 [zh-cn]

Mediawiki

2013-12-18T09:21:29Z

202.127.29.127：

==php==
*简单的php
<htm>
<body>
It works!
<?php
phpinfo();
?>
</body>
</html>

Mediawiki

2013-12-18T09:21:05Z

202.127.29.127：

==php==
*简单的php
<htm>
<body>
It works!
<?php
phpinfo();
?>
</body>
</html>

Mediawiki

2013-12-18T09:20:45Z

202.127.29.127：以“==php== *简单的php <htm> <body> <h1>It works!</h1> <?php phpinfo(); ?> </body> </html>”为内容创建页面

==php==
*简单的php
<htm>
<body>
<h1>It works!</h1>
<?php
phpinfo();
?>
</body>
</html>

首页

2013-12-18T09:15:50Z

202.127.29.127：

==内容==

[[天文]]

[[linux]]

[[IDL]]

[[英语语法]]

[[网站服务]]

[https://casper.berkeley.edu/astrobaki/index.php AstroBaki]

==帮助==

*语法格式[http://www.mediawiki.org/w/index.php?title=Help:Formatting/zh&oldid=621228]
*链接[http://www.mediawiki.org/wiki/Help:Links/zh]
*图片[http://www.mediawiki.org/wiki/Help:Images/zh]
*表格[http://www.mediawiki.org/wiki/Help:Tables/zh]

首页

2013-12-18T09:15:42Z

202.127.29.127：

==内容==

[[天文]]

[[linux]]

[[IDL]]

[[英语语法]]

[[网站服务]]
[https://casper.berkeley.edu/astrobaki/index.php AstroBaki]

==帮助==

*语法格式[http://www.mediawiki.org/w/index.php?title=Help:Formatting/zh&oldid=621228]
*链接[http://www.mediawiki.org/wiki/Help:Links/zh]
*图片[http://www.mediawiki.org/wiki/Help:Images/zh]
*表格[http://www.mediawiki.org/wiki/Help:Tables/zh]

星系中的常见发射线

2013-12-12T08:58:43Z

202.127.29.127：

* [OII] doublet (3737A)
* [OIII] (4959A and 5007A)
* Balmer series (6563A, 4861A, 4340A, 4103A, ...).
* [NII]6583A

星系中的常见发射线

2013-12-12T08:57:09Z

202.127.29.127：以“* [OII] doublet (3737A) * [OIII] (4959A and 5007A) * Balmer series (6563A, 4861A, 4340A, 4103A, ...).”为内容创建页面

* [OII] doublet (3737A)
* [OIII] (4959A and 5007A)
* Balmer series (6563A, 4861A, 4340A, 4103A, ...).

天文实测

2013-12-12T08:56:31Z

202.127.29.127：

[[airmass and DAR]]

[[各种相对速度]]

[[各种坐标系]]

[[星系中的常见发射线]]

常用表达

2013-12-10T07:03:04Z

202.127.29.127：

*We will anyway discuss ** where relevant.
*palying a significant role in shaping
*A description of the relevant processes and related parameters is given below.
*For the rest of the paper we will mainly focus our attention on...
*Effectively, the ... can be considered as a free parameter.
* We will discuss a realization of the * model with the identical prescriptions as the one just described by with no..
* We will anyhow briefly discuss * in Appendix.
* In order to.., we take advantage of ..
*We conclude the section by emphasizing that even if ...
* It has already been pointed out....
* Although ... is the result of a complex interplay among a variety of different physical processes, we can still capture some basic trends.
* There are several general noteworthy features in Fig. 1.
* making them ideal,complementary tools for studies such as the one undertaken here.
* The error on the median is computed by dividing the 1 sigma uncertainty of the same distribution by the square root of the number of galaxies in that bin.
* in line with what assumed by
* as detailed below
* the sum of A plus B

常用表达

2013-12-10T07:01:09Z

202.127.29.127：

*We will anyway discuss ** where relevant.
*palying a significant role in shaping
*A description of the relevant processes and related parameters is given below.
*For the rest of the paper we will mainly focus our attention on...
*Effectively, the ... can be considered as a free parameter.
* We will discuss a realization of the * model with the identical prescriptions as the one just described by with no..
* We will anyhow briefly discuss * in Appendix.
* In order to.., we take advantage of ..
*We conclude the section by emphasizing that even if ...
* It has already been pointed out....
* Although ... is the result of a complex interplay among a variety of different physical processes, we can still capture some basic trends.
* making them ideal,complementary tools for studies such as the one undertaken here.
* The error on the median is computed by dividing the 1 sigma uncertainty of the same distribution by the square root of the number of galaxies in that bin.
* in line with what assumed by
* as detailed below
* the sum of A plus B

常用表达

2013-12-10T06:50:43Z

202.127.29.127：

*We will anyway discuss ** where relevant.
*palying a significant role in shaping
*A description of the relevant processes and related parameters is given below.
*For the rest of the paper we will mainly focus our attention on...
*Effectively, the ... can be considered as a free parameter.
* We will discuss a realization of the * model with the identical prescriptions as the one just described by with no..
* We will anyhow briefly discuss * in Appendix.
* In order to.., we take advantage of ..
*We conclude the section by emphasizing that even if ...
* It has already been pointed out....
* Although ... is the result of a complex interplay among a variety of different physical processes, we can still capture some basic trends.
* making them ideal,complementary tools for studies such as the one undertaken here.
* in line with what assumed by
* as detailed below
* the sum of A plus B

常用表达

2013-12-10T06:47:52Z

202.127.29.127：

Linux:硬件

2013-12-04T08:44:48Z

202.127.29.127：

==基础==
*查看显卡
lspci | grep VGA
*3D 加速
glxinfo | grep render
glxgear
*重新启动X
sytemctl restart display-manager
sytemctl status display-manager
*xorg.conf文件
Fedora releases since Fedora 10 do not create a /etc/X11/xorg.conf file, used to configure the X server, by default. The X configuration is automatically determined each time X is started. In most cases, this works well and there is no need to manually specify X configuration information.

If you need to make manual changes to X configuration for any reason, you will first need to create a /etc/X11/xorg.conf file.
Xorg -configure

You can create a basic xorg.conf using the X executable itself. As root run:
Xorg :1 -configure

This will create the file /root/xorg.conf.new, which you can then copy to /etc/X11/xorg.conf:
cp /root/xorg.conf.new /etc/X11/xorg.conf
and edit according to your needs.

所以如果nvidia驱动启动不来，要删除/etc/X11/xorg.conf 文件
==NVIDIA==
[[fedora 17:nvidia驱动]]

==GDM/KDM==
如何重新启动GDM/KDM
init 3
init 5

==ATI==
*开源驱动：xorg-x11-drv-ati

Fedora 19: grub2报错

2013-11-12T09:35:30Z

202.127.29.127：以“从fedora 18用fedup升级到fedora 19之后，重启动出现 grub报错 error: symbol 'grub_term_highlight_color' not found. 安装盘rescue启动后，重新执...”为内容创建页面

从fedora 18用fedup升级到fedora 19之后，重启动出现
grub报错
error: symbol 'grub_term_highlight_color' not found.

安装盘rescue启动后，重新执行
chroot /mnt/sysimage
grub2-mkconfig --output=/boot/grub2/grub.cfg
重启后，同一报错

google之后，发现需执行
grub2-install --recheck /dev/sda
重新启动之后grub恢复，但是会遇到SELlinux的问题

Fedora

2013-11-12T09:31:50Z

202.127.29.127：

[[fedora 17:nvidia驱动]]

[[fedora 16: grub 2]]

[[fedora 16:: pulseaudio]]

[[fedora 16:: 字体美化]]

[[fedora 16: 服务]]

[[fedora 16: 无线网络的开关]]

[[fedora 17:启动ssh服务]]

[[fedora 19: grub2报错]]

[[bug]]

== 系统清理 ==
*清理不被当前系统任何软件所使用的依赖包
package-cleanup --leaves
*清理当前软件仓库不再支持的孤儿包:
package-cleanup --orphans
*清理旧内核不删除内核devel包:
package-cleanup --oldkernels --keepdevel

数组

2013-10-21T06:08:48Z

202.127.29.127：/* 数组 */

==数组==
* REFORM 数组变形
:将数组变为制定的维数
A=indgen(20), B=reform(A,2,10)
:reform在默认（无输入参数）的情况下将数组变为一维
A＝reform(data[1,*])

* rotate
:可以把数组旋转后组成矩阵，类似于列操作。
a=indgen(10)
b=indgen(10)
c=[rotate(a,1),rotate(b,10]

* reverse
:数组反向
:例：数组降序排列,结合sort（默认升序）
PRINT, 'Elements of A in descending order: ', A[REVERSE(SORT(A))]

*扩维
:fan程序(http://astro.berkeley.edu/~johnjohn/idl.html#FAN )
IDL>print,fan(indgen(3),2)
IDL>print,fan(indgen(3),2,/trans)

* 多维数组的位置
:用array_indices

array = RANDOMU(seed, 10, 10)
mx = MAX(array, location)
ind=array_indices(array,location)
print, ind, array[ind[0],ind[1]], format = '(%"Value at [%d, %d] is %f")'

IDL prints:
Value at [3, 6] is 0.973381

* 数组随机打乱（shuffle)
Arr_S=arr[sort(randomu(seed,N_elements(arr))]

数组

2013-10-21T06:08:29Z

202.127.29.127：/* 数组 */

==数组==
* REFORM 数组变形
::将数组变为制定的维数
A=indgen(20), B=reform(A,2,10)
::reform在默认（无输入参数）的情况下将数组变为一维
A＝reform(data[1,*])

* rotate
:可以把数组旋转后组成矩阵，类似于列操作。
a=indgen(10)
b=indgen(10)
c=[rotate(a,1),rotate(b,10]

* reverse
:数组反向
:例：数组降序排列,结合sort（默认升序）
PRINT, 'Elements of A in descending order: ', A[REVERSE(SORT(A))]

*扩维
:fan程序(http://astro.berkeley.edu/~johnjohn/idl.html#FAN )
IDL>print,fan(indgen(3),2)
IDL>print,fan(indgen(3),2,/trans)

* 多维数组的位置
:用array_indices

array = RANDOMU(seed, 10, 10)
mx = MAX(array, location)
ind=array_indices(array,location)
print, ind, array[ind[0],ind[1]], format = '(%"Value at [%d, %d] is %f")'

IDL prints:
Value at [3, 6] is 0.973381

* 数组随机打乱（shuffle)
Arr_S=arr[sort(randomu(seed,N_elements(arr))]

普通ASCII文件

2013-07-19T07:42:16Z

202.127.29.127：/* readline= */

== read_ascii ==
read_ascii可方便读取，读取后成为一个数据结构，默认全部是浮点数，如果需要复杂的数据结构需要使用 TEMPLATE= 关键词

关键词
*DATA_START: 从某一行开始读

*COMMENT_SYMBOL: 注释行

*MISSING_VALUE：为一些非法字符的赋值，默认是[[IDL中的系统变量]] !VALUES.F_NAN.

*TEMPLATE: 可以由ASCII_TEMPLATE给出

== readcol ==
[[astro_lib]]中的一个可以指定格式，读入一个规则文件的某一列，或某几列的程序

IDL> FMT = 'A,I,I,F,I,I,F'
IDL> READCOL,'position.dat',F=FMT,name,hr,min,sec,deg,dmin,dsec

A - string data, B - byte, D - double precision, F- floating point
I - short integer, L - longword, LL - 64 bit integer,
U - unsigned short integer, UL - unsigned long integer
Z - longword hexadecimal, and X - skip a column.

== read_txt==
我自己写了一个read_txt[[文件:read_txt.pro.txt]]程序，可以智能的将一个N行M列的数据文件（空格分隔）读为一个data[N,M]的flota array。

==readline==
一个把文件按照行的模式读入的程序，输出是一个字符串数组，可以结合col_struct使用
IDL>readline,'file.txt',lines,count=Nline

===col_struct===
将一行由空格分开的数据读入一个[[结构]] 来自http://astro.berkeley.edu/~johnjohn/idl.html#COL_STRUCT
IDL> spawn,'cat data.txt', lines
IDL> struct = col_struct(lines, ['star','ra','dec','vmag','notes'] , types=['a','f','f','f','a'])

普通ASCII文件

2013-07-19T07:40:58Z

202.127.29.127：

== read_ascii ==
read_ascii可方便读取，读取后成为一个数据结构，默认全部是浮点数，如果需要复杂的数据结构需要使用 TEMPLATE= 关键词

关键词
*DATA_START: 从某一行开始读

*COMMENT_SYMBOL: 注释行

*MISSING_VALUE：为一些非法字符的赋值，默认是[[IDL中的系统变量]] !VALUES.F_NAN.

*TEMPLATE: 可以由ASCII_TEMPLATE给出

== readcol ==
[[astro_lib]]中的一个可以指定格式，读入一个规则文件的某一列，或某几列的程序

IDL> FMT = 'A,I,I,F,I,I,F'
IDL> READCOL,'position.dat',F=FMT,name,hr,min,sec,deg,dmin,dsec

A - string data, B - byte, D - double precision, F- floating point
I - short integer, L - longword, LL - 64 bit integer,
U - unsigned short integer, UL - unsigned long integer
Z - longword hexadecimal, and X - skip a column.

== read_txt==
我自己写了一个read_txt[[文件:read_txt.pro.txt]]程序，可以智能的将一个N行M列的数据文件（空格分隔）读为一个data[N,M]的flota array。

==readline===
一个把文件按照行的模式读入的程序，输出是一个字符串数组，可以结合col_struct使用
IDL>readline,'file.txt',lines,count=Nline

===col_struct===
将一行由空格分开的数据读入一个[[结构]] 来自http://astro.berkeley.edu/~johnjohn/idl.html#COL_STRUCT
IDL> spawn,'cat data.txt', lines
IDL> struct = col_struct(lines, ['star','ra','dec','vmag','notes'] , types=['a','f','f','f','a'])

Sshfs

2013-07-17T08:59:53Z

202.127.29.127：

远程文件系统

*yum install fuse-sshfs
*mount -o follow_symlinks user@host:direct localdirect ;挂载
*fusermount -u localdirect ;卸载

Sshfs

2013-07-17T02:17:23Z

202.127.29.127：以“远程文件系统 *yum install fuse-sshfs *mount ser@host:direct localdirect ;挂载 *fusermount -u localdirect ;卸载”为内容创建页面

远程文件系统

*yum install fuse-sshfs
*mount ser@host:direct localdirect ;挂载
*fusermount -u localdirect ;卸载

Linux：软件

2013-07-17T02:16:04Z

202.127.29.127：

[[rpm]]

[[VIM]]

[[wget]]

[[mysql]]

[[远程管理screen and tmux]]

[[dpkg软件包管理]]

[[sshfs]]

UKIDSS

2013-06-18T05:25:01Z

202.127.29.127：/* The UKIRT Infrared Deep Sky Survey */

== The UKIRT Infrared Deep Sky Survey ==
UKIDSS is a set of five surveys. The areas and 5-sigma depths are as follows:
#Large Area Survey (LAS) 4000 sq. degs K=18.4 extraGalactic
#Galactic Plane Survey (GPS) 1800 sq. degs K=19.0 Galactic
#Galactic Clusters Survey (GCS) 1400 sq. degs K=18.7 Galactic
#Deep Extragalactic Survey (DXS) 35 sq. degs K=21.0 extraGalactic
#Ultra Deep Survey (UDS) 0.77 sq. degs K=23.0 extraGalactic

[[文件:http://www.ukidss.org/images/all7yr.gif]]

UKIDSS

2013-06-18T05:23:57Z

202.127.29.127：/* The UKIRT Infrared Deep Sky Survey */

UKIDSS

2013-06-18T05:23:49Z

202.127.29.127：以“== The UKIRT Infrared Deep Sky Survey == UKIDSS is a set of five surveys. The areas and 5-sigma depths are as follows: #Large Area Survey (LAS) 4000 sq. degs K=18...”为内容创建页面

星系巡天

2013-06-18T05:22:26Z

202.127.29.127：/* 测光巡天 */

==综合==
[[SDSS IV|AS3]]
*[[eBOSS]]
*[[ManGA]]

[[BigBOSS]]

==测光巡天==
[[AEGIS]]:2007

[[COSMOS]]:2008

[[VIKING]]ongoing

[[KIDS]]

[[HATLAS]]

[[UKIDSS]]

==红移巡天==
[[WiggleZ]]

[[VIPERS]]

[[DEEP2]]

[[VVDS]]

==星系团==
[[ICBS]]

[[SpARCS]]

[[GCLASS]]

星系巡天

2013-06-18T05:20:36Z

202.127.29.127：/* 测光巡天 */

==综合==
[[SDSS IV|AS3]]
*[[eBOSS]]
*[[ManGA]]

[[BigBOSS]]

==测光巡天==
[[AEGIS]]:2007

[[COSMOS]]:2008

[[VIKING]]ongoing

[[KIDS]]

[[HATLAS]]

==红移巡天==
[[WiggleZ]]

[[VIPERS]]

[[DEEP2]]

[[VVDS]]

==星系团==
[[ICBS]]

[[SpARCS]]

[[GCLASS]]

VVDS

2013-06-18T03:22:28Z

202.127.29.127：

The VIRMOS VLT Deep Survey

*The Imaging survey and the Spectroscopic survey over sixteen square degrees of the sky in four separate fields.
:The deep imaging is to obtain UBVRI over 16 deg^2 and K' imaging over selected areas, with the CFHT, ESO-NTT and ESO-2.2m.
:The VLT VIMOS and NIRMOS will allow to measure redshifts from magnitude selected samples of galaxies picked from the imaging survey.

* A sample of 100,000 redshifts for sources up to AB = 22.5.
:Once a complete magnitude limited sample has been observed with a spectral resolution R~250
:a sub-sample will be observed at R~2500-5000 to avoid any bias.
*A sample of 50,000 redshifts for objects up to AB = 24
*A sample of 1,000 redshifts for objects up to AB = 26

VIMOS

2013-06-18T03:17:46Z

202.127.29.127：

VIMOS (VIsible imaging Multi-Object Spectrograph)

用于 The VIMOS VLT Deep Survey ([[VVDS]]), [[VIPERS]]

有三种工作模式
#DIRECT IMAGING
#MULTI-SLIT SPECTROSCOPY
#INTEGRAL FIELD SPECTROSCOPY

具体参考http://cesam.oamp.fr/vvdsproject/instrument.htm

VVDS

2013-06-18T03:17:28Z

202.127.29.127：以“The Franco-Italian VIRMOS project has delivered the VIMOS spectrograph for the European Southern Observatory Very Large Telescope (ESO-VLT).”为内容创建页面

The Franco-Italian VIRMOS project has delivered the [[VIMOS]] spectrograph for the European Southern Observatory Very Large Telescope (ESO-VLT).

星系巡天

2013-06-18T03:16:46Z

202.127.29.127：/* 红移巡天 */

==综合==
[[SDSS IV|AS3]]
*[[eBOSS]]
*[[ManGA]]

[[BigBOSS]]

==测光巡天==
[[AEGIS]]:2007

[[COSMOS]]:2008

[[VIKING]]ongoing

[[KIDS]]

==红移巡天==
[[WiggleZ]]

[[VIPERS]]

[[DEEP2]]

[[VVDS]]

==星系团==
[[ICBS]]

[[SpARCS]]

[[GCLASS]]

DEEP2

2013-06-18T03:15:40Z

202.127.29.127：以“The DEEP survey is a two-phased project using the Keck telescopes to study the distant Universe. *Phase 1 used the LRIS spectrograph to study a sample of ~1000 gal...”为内容创建页面

The DEEP survey is a two-phased project using the Keck telescopes to study the distant Universe.

*Phase 1 used the LRIS spectrograph to study a sample of ~1000 galaxies to a limit of I=24.5.
*Phase 2 of the DEEP project is using the new DEIMOS spectrograph to obtain spectra of ~50,000 faint galaxies with redshifts z > 0.7.

:Instrument [[DEIMOS]] spectrograph on Keck II
:Principal Redshift Range 0.75 < z < 1.4, preselected using BRI photometry
:Four, each 120' by 30'

英语语法

2013-06-17T05:51:02Z

202.127.29.127：

[[定冠词the的用法]]

[[单复数]]

[[我的常见错误]]

[[数学术语]]

assume to be， find to be, expect sth to do

it is not trivial 不可忽视的，重要的 it becomes non-trivial to ...

bias towards

divide into

substantially

constant scatter of 0.5 in the distribution of

differential 有差别的

spurious 假冒的

our aim is to figure out

statistic 统计量

objects without detections

may be prone to 倾向于

ambiguity 含糊

advocate 支持，主张，鼓吹，提倡

imperative 急需的

epilogue 结束语

pros and cons 赞成和反对的观点

additive and subtractive 增加的和减少的

facilitate 促进

delineate（描述）

utilize （利用使用）

aid帮助

on the fly 过程当中

inasmuch as 因。。。之故

LSR

2013-06-09T07:25:36Z

202.127.29.127：以“In astronomy, the local standard of rest or LSR follows the mean motion of material in the Milky Way in the neighborhood of the Sun”为内容创建页面

In astronomy, the local standard of rest or LSR follows the mean motion of material in the Milky Way in the neighborhood of the Sun

各种相对速度

2013-06-09T07:25:25Z

202.127.29.127：以“==cobe的结果== *Sun - CMB :v=369.5km/s l=264.4 b=48..4 *Sun - LSR :v=20 km/s l=57,b=23 *LSR - GC :v=222km/s l=91.1 b=0 *GC-CMB :v=552.2km/s l=266.5 b=29....”为内容创建页面

==cobe的结果==
*Sun - CMB
:v=369.5km/s l=264.4 b=48..4
*Sun - [[LSR]]
:v=20 km/s l=57,b=23
*LSR - GC
:v=222km/s l=91.1 b=0
*GC-CMB
:v=552.2km/s l=266.5 b=29.1
*LG - CMB
:v=627km/s l=276 b=30

天文实测

2013-06-09T07:22:16Z

202.127.29.127：

[[airmass and DAR]]

[[各种相对速度]]

数组

2013-06-08T06:46:29Z

202.127.29.127：

==数组==
* REFORM
:数组变形，比如data是读入的二维数组，data的第一列可以用 A＝reform(data[1,*])
::data[1,*]仍然是个二维数组，reform在默认的情况下将这其变为一维数组

* rotate
:可以把数组旋转后组成矩阵，类似于列操作。
a=indgen(10)
b=indgen(10)
c=[rotate(a,1),rotate(b,10]

* reverse
:数组反向
:例：数组降序排列,结合sort（默认升序）
PRINT, 'Elements of A in descending order: ', A[REVERSE(SORT(A))]

*扩维
:fan程序(http://astro.berkeley.edu/~johnjohn/idl.html#FAN )
IDL>print,fan(indgen(3),2)
IDL>print,fan(indgen(3),2,/trans)

* 多维数组的位置
:用array_indices

array = RANDOMU(seed, 10, 10)
mx = MAX(array, location)
ind=array_indices(array,location)
print, ind, array[ind[0],ind[1]], format = '(%"Value at [%d, %d] is %f")'

IDL prints:
Value at [3, 6] is 0.973381

* 数组随机打乱（shuffle)
Arr_S=arr[sort(randomu(seed,N_elements(arr))]

IDL

2013-06-08T06:46:20Z

202.127.29.127：

[[IDL的安装]]

[[变量]]

[[数组]]

[[结构]]

[[IDL中的文件处理|文件处理]]

[[画图]]

[[程序]]

[[library]]

结构

2013-06-08T06:46:00Z

202.127.29.127：以“==结构（数组）增加一个TAG== *结构很容易增加一个tag，比如 A= {tag1:0.,tag2:'Name'} B=create_struct(A,'tag3',1L) 但是如果A是结构数...”为内容创建页面

==结构（[[数组]]）增加一个TAG==

*结构很容易增加一个tag，比如
A= {tag1:0.,tag2:'Name'}
B=create_struct(A,'tag3',1L)
但是如果A是结构数组了，就不能再这样操作。

结果数组经常被用来读入数据文件，如果该数据文件加上一列数据，如何较方便的操作。
:一种方法如下：
A= {tag1:0.,tag2:'Name'}
B= {tag1:1.,tag2:'Name2',tag3:10L}
A2= replicate(A,10)
B2 = replicate(B,10)
struct_assign,A,B ；把A的数值付给B
print,B ;可以看到B的前两列已经变成A的数值，但B的第三列被充0，所以这时候可以再给B.tag3赋值。

:还有一种方法，但没上面那么直观
str={a: 0l, b: ''}
str_arr=REPLICATE(str,10)
ref_str = reform_struct(str_arr, /tag_array, 10)
ref_str = create_struct(ref_str, 'c' ,make_array(10))
help, ref_str, /str

还有一共jjadd_tag的程序(http://astro.berkeley.edu/~johnjohn/idl.html#JJADD_TAG)
IDL> struct = {a: 0., b: 'blah'}
IDL> a=replicate(struct,2)
IDL> c=jjadd_tag(a,'new',0b)

普通ASCII文件

2013-06-08T06:44:32Z

202.127.29.127：

== read_ascii ==
read_ascii可方便读取，读取后成为一个数据结构，默认全部是浮点数，如果需要复杂的数据结构需要使用 TEMPLATE= 关键词

关键词
*DATA_START: 从某一行开始读

*COMMENT_SYMBOL: 注释行

*MISSING_VALUE：为一些非法字符的赋值，默认是[[IDL中的系统变量]] !VALUES.F_NAN.

*TEMPLATE: 可以由ASCII_TEMPLATE给出

== readcol ==
[[astro_lib]]中的一个可以指定格式，读入一个规则文件的某一列，或某几列的程序

IDL> FMT = 'A,I,I,F,I,I,F'
IDL> READCOL,'position.dat',F=FMT,name,hr,min,sec,deg,dmin,dsec

A - string data, B - byte, D - double precision, F- floating point
I - short integer, L - longword, LL - 64 bit integer,
U - unsigned short integer, UL - unsigned long integer
Z - longword hexadecimal, and X - skip a column.

== read_ascii ==
我自己写了一个read_txt[[文件:read_txt.pro.txt]]程序，可以智能的将一个N行M列的数据文件（空格分隔）读为一个data[N,M]的flota array。

==col_struct==
将一行由空格分开的数据读入一个[[结构]] 来自http://astro.berkeley.edu/~johnjohn/idl.html#COL_STRUCT
IDL> spawn,'cat data.txt', lines
IDL> struct = col_struct(lines, ['star','ra','dec','vmag','notes'] , types=['a','f','f','f','a'])

数组

2013-06-08T06:40:26Z

202.127.29.127：/* 数组 */

数组

2013-06-08T06:39:46Z

202.127.29.127：/* 数组 */

==数组==
* REFORM
:数组变形，比如data是读入的二维数组，data的第一列可以用 A＝reform(data[1,*])
::data[1,*]仍然是个二维数组，reform在默认的情况下将这其变为一维数组

* rotate
:可以把数组旋转后组成矩阵，类似于列操作。
a=indgen(10)
b=indgen(10)
c=[rotate(a,1),rotate(b,10]

* reverse
:数组反向

*扩维
:fan程序(http://astro.berkeley.edu/~johnjohn/idl.html#FAN )
IDL>print,fan(indgen(3),2)
IDL>print,fan(indgen(3),2,/trans)

:例：数组降序排列,结合sort（默认升序）
PRINT, 'Elements of A in descending order: ', A[REVERSE(SORT(A))]

* 多维数组的位置
:用array_indices

array = RANDOMU(seed, 10, 10)
mx = MAX(array, location)
ind=array_indices(array,location)
print, ind, array[ind[0],ind[1]], format = '(%"Value at [%d, %d] is %f")'

IDL prints:
Value at [3, 6] is 0.973381

* 数组随机打乱（shuffle)
Arr_S=arr[sort(randomu(seed,N_elements(arr))]

==结构==

*结构很容易增加一个tag，比如
A= {tag1:0.,tag2:'Name'}
B=create_struct(A,'tag3',1L)
但是如果A是结构数组了，就不能再这样操作。

结果数组经常被用来读入数据文件，如果该数据文件加上一列数据，如何较方便的操作。
:一种方法如下：
A= {tag1:0.,tag2:'Name'}
B= {tag1:1.,tag2:'Name2',tag3:10L}
A2= replicate(A,10)
B2 = replicate(B,10)
struct_assign,A,B ；把A的数值付给B
print,B ;可以看到B的前两列已经变成A的数值，但B的第三列被充0，所以这时候可以再给B.tag3赋值。

:还有一种方法，但没上面那么直观
str={a: 0l, b: ''}
str_arr=REPLICATE(str,10)
ref_str = reform_struct(str_arr, /tag_array, 10)
ref_str = create_struct(ref_str, 'c' ,make_array(10))
help, ref_str, /str

还有一共jjadd_tag的程序(http://astro.berkeley.edu/~johnjohn/idl.html#JJADD_TAG)
IDL> struct = {a: 0., b: 'blah'}
IDL> a=replicate(struct,2)
IDL> c=jjadd_tag(a,'new',0b)

数组

2013-06-08T06:32:28Z

202.127.29.127：

==数组==
* REFORM
:数组变形，比如data是读入的二维数组，data的第一列可以用 A＝reform(data[1,*])
::data[1,*]仍然是个二维数组，reform在默认的情况下将这其变为一维数组

* rotate
:可以把数组旋转后组成矩阵，类似于列操作。
a=indgen(10)
b=indgen(10)
c=[rotate(a,1),rotate(b,10]

* reverse
:数组反向

:例：数组降序排列,结合sort（默认升序）
PRINT, 'Elements of A in descending order: ', A[REVERSE(SORT(A))]

* 多维数组的位置
:用array_indices

array = RANDOMU(seed, 10, 10)
mx = MAX(array, location)
ind=array_indices(array,location)
print, ind, array[ind[0],ind[1]], format = '(%"Value at [%d, %d] is %f")'

IDL prints:
Value at [3, 6] is 0.973381

* 数组随机打乱（shuffle)
Arr_S=arr[sort(randomu(seed,N_elements(arr))]

==结构==

*结构很容易增加一个tag，比如
A= {tag1:0.,tag2:'Name'}
B=create_struct(A,'tag3',1L)
但是如果A是结构数组了，就不能再这样操作。

结果数组经常被用来读入数据文件，如果该数据文件加上一列数据，如何较方便的操作。
:一种方法如下：
A= {tag1:0.,tag2:'Name'}
B= {tag1:1.,tag2:'Name2',tag3:10L}
A2= replicate(A,10)
B2 = replicate(B,10)
struct_assign,A,B ；把A的数值付给B
print,B ;可以看到B的前两列已经变成A的数值，但B的第三列被充0，所以这时候可以再给B.tag3赋值。

:还有一种方法，但没上面那么直观
str={a: 0l, b: ''}
str_arr=REPLICATE(str,10)
ref_str = reform_struct(str_arr, /tag_array, 10)
ref_str = create_struct(ref_str, 'c' ,make_array(10))
help, ref_str, /str

还有一共jjadd_tag的程序(http://astro.berkeley.edu/~johnjohn/idl.html#JJADD_TAG)
IDL> struct = {a: 0., b: 'blah'}
IDL> a=replicate(struct,2)
IDL> c=jjadd_tag(a,'new',0b)

Spawn

2013-06-08T06:24:35Z

202.127.29.127：以“*IDL>SPAWN, 'ps ax' *IDL>spawn,'cat data.txt', lines IDL>print,lines”为内容创建页面

*IDL>SPAWN, 'ps ax'
*IDL>spawn,'cat data.txt', lines
IDL>print,lines

程序

2013-06-08T06:20:02Z

202.127.29.127：

[[Fortran程序调用]]

[[IDL中的关键词继承|关键词继承]]

[[spawn|系统调用spawn]]

程序

2013-06-08T06:19:39Z

202.127.29.127：

[[Fortran程序调用]]

[[IDL中的关键词继承|关键词继承]]

[[系统调用|spawn]]

英语语法

2013-06-07T08:11:38Z

202.127.29.127：

星系巡天

2013-06-07T07:58:09Z

202.127.29.127：/* 测光巡天 */

星系巡天

2013-06-07T07:57:56Z

202.127.29.127：/* 测光巡天 */

==综合==
[[SDSS IV|AS3]]
*[[eBOSS]]
*[[ManGA]]

[[BigBOSS]]

==测光巡天==
[[AEGIS]]:2007

[[COSMOS]]:2008

[[VIKING]]ongoing

[[KiDS]]

==红移巡天==
[[WiggleZ]]

[[VIPERS]]

[[DEEP2]]

==星系团==
[[ICBS]]

[[SpARCS]]

[[GCLASS]]

KIDS

2013-06-07T07:56:59Z

202.127.29.127：以“*KiDS, the Kilo-Degree Survey, is a new, large-scale optical imaging survey in the Southern sky, designed to tackle some of the most fundamental questions of cosmo...”为内容创建页面

*KiDS, the Kilo-Degree Survey,

is a new, large-scale optical imaging survey in the Southern sky, designed to tackle some of the most fundamental questions of cosmology and galaxy formation of today. Using the VLT Survey Telescope (VST), located at the ESO [[Paranal]] Observatory, KiDS will map 1500 square degrees of the night sky in four filters (u, g, r, i).