Differences

This shows you the differences between two versions of the page.

--- en:documentation:catgen [2013/11/12 08:20] – external edit 127.0.0.1
+++ en:documentation:catgen [2016/09/24 17:21] (current) – [Notes for Linux and Mac users] pch
@@ Line 27: / Line 27: @@
 - 31  I6     ---       HD         [1/225300]? Henry Draper Catalog Number
-It is important to be familiar with the format of the text based catalog before you try to convert it with CatGen. There are lots of details to pay attention at: units, value ranges (between square brackets), number formats, identifiers, coordinate formats and epochs. A question mark in the Explanations indicate that this data is not always present, look at the data file itself to have an idea of it's frequency. Also be sure to read the notes, when available. A file editor that can handle large files (like **[[http://www.simtel.net/product.php?url_fb_product_page=11983|PFE]]**) is very useful at this step.
+It is important to be familiar with the format of the text based catalog before you try to convert it with CatGen. There are lots of details to pay attention at: units, value ranges (between square brackets), number formats, identifiers, coordinate formats and epochs. A question mark in the Explanations indicate that this data is not always present, look at the data file itself to have an idea of it's frequency. Also be sure to read the notes, when available. A file editor that can handle large files (like **[[http://notepad-plus-plus.org/|Notepad++]]**) is very useful at this step.
 If the data only is available in another format, it is generally easy to write a simple program to extract and format them.  A scripting language like Perl can be very useful for that. To handle the CSV files you can use the very good **[[http://home.hccnet.nl/s.j.francke/csved/csvedsetup.exe|CSVed]]**, or **Calc** included with **[[http://www.openoffice.org/|OpenOffice]]**.
@@ Line 57: / Line 57: @@
 ===== Page 1 =====
 {{  en:documentation:catgen_1_dsl.jpg|}}
 In the first page you need to indicate the **Catalog type** in your catalog, this activates some specific options in the next pages.
@@ Line 66: / Line 67: @@
 Choose **Output Catalog Type**. With SkyChart V3, you can choose text file for small catalogs. In this case no data is written out but just a file descriptor that let the program to access your original text file. This way a change to the file is reported to the chart without having to run Catgen again.
+If you select "Text file catalog" you also have the option to specify an "Update URL" that point to the latest version of the file on the Internet. This way you can get the last version by a single click in the catalog setup.
 Click the **Next** button to go to the second page.
-\\ \\ \\ \\ \\ \\ \\ \\ \\ \\
+\\ \\ \\
@@ Line 80: / Line 83: @@
 ===== Page 2 =====
 {{  en:documentation:catgen_2_ol.jpg|}}
 Select the input format of the coordinates:
   * **RA options** Hour, minutes, seconds or decimal Hour or Degrees, minutes, seconds or decimal degrees.
@@ Line 97: / Line 101: @@
   * **Edit line operation** (see below) set character strings that will be recognized for drawing operations (comma separated values). Click return when ready.
   * **Edit color** (see below) set character strings that will be recognized for lines color (comma separated values). Click return when ready.
 {{en:documentation:catgen_2a_ol.jpg|}} {{en:documentation:catgen_2b_ol.jpg|}}
 **Nebulae Options**
 {{  en:documentation:catgen_2_dsl.jpg|}}
   * **Dimension and Units** default dimensions (in case of empty fields: no data) and unit.
   * **Logaritmic scale** check this box if the field used for size is a flux, i.e. for a radio source catalog.
   * **Edit Object Type** set character strings that will be recognized to set the object type (comma separated values). Click return when ready.
   * **Edit Units** set character strings that will be recognized to set the unit size (comma separated values). Click return when ready.
 {{en:documentation:catgen_2a_dsl.jpg|}} {{en:documentation:catgen_2b_dsl.jpg|}}
@@ Line 158: / Line 165: @@
 If you check **Use this field name as an Alternate name** the string value can be used as an alternate name for the object. This name is used in the case the main name (Catalog Id) is missing or it can be added to the index file of the catalog.\\
 {{  en:documentation:catgen_3_dsl_adv.jpg|}}
 The **Advanced** button enables you to compute a linear transformation of the catalog data. It is active only for numeric values.\\
 A use can be to obtain the object coordinates when these aren't directly available from the catalog.\\
@@ Line 177: / Line 185: @@
 ===== Page 4 =====
 {{  en:documentation:catgen_4_dsl1.jpg|}}
 In the last page you set the options for the generated catalog.
@@ Line 191: / Line 200: @@
 {{  en:documentation:catgen_prog_dsl.jpg?300|}}
 A progress box shows you the current operation. You can interrupt the process by pressing the **Abort** button. In such a case the catalog will not be usable.\\
 After the build is complete, the progress box is closed. You can exit the program with the **Close** button.
@@ Line 212: / Line 222: @@
 maximum number of file a user can open at the same time is limited to 1024.
-To increase this limit you first need to change the system limit in the file
+On Mac OS X the way to do may vary depending on your version. See the first answer [[http://unix.stackexchange.com/questions/108174/how-to-persist-ulimit-settings-in-osx-mavericks|to this question]].
+On Linux you first need to change the system limit in the file
 limits.conf :
 <code>