What programs can I use to separate clusters of vector objects
Simple programs with tutorials for beginners in graphic design?
Use LaTeX to produce Epub I'm asking here a question which was asked on the italian TeX group forum.  Is there a way to produce Epub output automatically from a LaTeX source?  I should remark that Epub is just HTML+a subset of CSS+some XML for metadata, packed in a ZIP file. So one can settle with the existing tools for HTML conversion. Still something better could be done for Epub output.  In the first place, Epub accepts only a subset of CSS. Then it would be nice to produce the file with the metadata from the LaTeX source too. Finally, I'm not sure how it works, but Epub files allow for automatic hyphenation of words. By this I mean that hyphenation can be specified in the Epub file itself, so that a reader will not need to know hyphenation rules. Note that since Epub files are resizable, all possible points of hyphenation must be specified. grep'ping files for multiple strings (not necessarily on the same line) I need to find node voltage at A. This seems like a trivial question, but when I set up the resistive voltage divider equations they are not equal to each other. Am I doing something wrong?  My equations are \$V_A = V_1(R3/(R3+R1)) = V_2(R3/(R3+R2))\$      I tried solving this problem with an LTSpice simulation and with the superposition method, but my answers did not match (although very close to each other). Is this because the simulator uses an approximation? Can someone compare results? Let he who believes in this prophet speak now what he knows.       Let him who believes in this prophet speak now what he knows. Can we have a red/status tag for "obsolete"? Given the changes that have been rolled out on Meta for the new close hold reasons, we've lost "too localized" here on meta.  However, "too localized" has a genuine use on meta (which is part change management system) to indicate those things which are truly obsolete (as evidenced by the text of the old close reason "refers to a specific point in time").  That said, there are things that are obsolete on meta, but we have no way of indicating that other than an "off topic" closure, which really sends the wrong message.  To mitigate that, I'd like a status-obsolete tag for meta sites which meta diamonds can apply to posts that have been made obsolete by other changes that were made to the system afterward. FPDF error: Some data has already been output, can't send PDF Replace Builtin commands with Custom Commands for CMD.exe override at runtime __setattr__ Are hand motions required to use the Force? In almost every canon (that is, visual) source, Force users typically wave a hand to invoke the Force to move or manipulate objects, people and thoughts. I get out-of-universe this is a visual cue that the Force is being used, but in-universe is it strictly necessary?  (The only exception I can think of is when Luke is training on Dagobah and is balancing rocks while standing on one hand with Yoda on his foot. He doesn't appear to be waving his hand to move the rocks.)  Is this addressed anywhere in-universe, even in Legends? In Harry Potter, Who is Merlin? In Harry Potter, who is Merlin and what is his role in wizarding history?  His contribution to the wizarding history is apparently known from the fact that some special honors are named after him, such as the Order of Merlin (First Class, Second Class and so on...). Did he live around the time of the four founders of Hogwarts? HTML text input allow only numeric input Is there a quick way to set an HTML text input (&lt;input type=text /&gt;) to only allow numeric keystrokes (plus '.')? Change Data Type Varchar To Varbinary(max) In SQL Server I am trying to use a MERGE statement to insert or delete rows from a table, but I only want to act on a subset of those rows. The documentation for MERGE has a pretty strongly worded warning:     It is important to specify only the columns from the target table that are used for matching purposes. That is, specify columns from the target table that are compared to the corresponding column of the source table. Do not attempt to improve query performance by filtering out rows in the target table in the ON clause, such as by specifying AND NOT target_table.column_x = value. Doing so may return unexpected and incorrect results.   but this is exactly what it appears I have to do to make my MERGE work.  The data I have is a standard many-to-many join table of items to categories (e.g. which items are included in which categories) like so:  CategoryId   ItemId ==========   ====== 1            1 1            2 1            3 2            1 2            3 3            5 3            6 4            5   What I need to do is to effectively replace all rows in a specific category with a new list of items. My initial attempt to do this looks like this:  MERGE INTO CategoryItem AS TARGET USING (   SELECT ItemId FROM SomeExternalDataSource WHERE CategoryId = 2 ) AS SOURCE ON SOURCE.ItemId = TARGET.ItemId AND TARGET.CategoryId = 2 WHEN NOT MATCHED BY TARGET THEN     INSERT ( CategoryId, ItemId )     VALUES ( 2, ItemId ) WHEN NOT MATCHED BY SOURCE AND TARGET.CategoryId = 2 THEN     DELETE ;   This appears to be working in my tests, but I am doing exactly what MSDN explicitly warns me not to do. This makes me concerned that I will run into unexpected problems later on, but I cannot see any other way to make my MERGE only affect rows with the specific field value (CategoryId = 2) and ignore rows from other categories.  Is there a "more correct" way to achieve this same result? And what are the "unexpected or incorrect results" that MSDN is warning me about? ffmpeg - Create a video from image frame with a start and a count Does Windows Defender update if Windows Update is set to manual? Why the galaxies form 2D planes (or spiral-like) instead of 3D balls (or spherical-like)? Question: As we know, (1) the macroscopic spatial dimension of our universe is 3 dimension, and (2) gravity attracts massive objects together and the gravitational force is isotropic without directional preferences. Why do we have the spiral 2D plane-like Galaxy(galaxies), instead of spherical or elliptic-like galaxies?   Input: Gravity is (at least, seems to be) isotropic from its force law (Newtonian gravity). It should show no directional preferences from the form of force vector $\vec{F}=\frac{GM(r_1)m(r_2)}{(\vec{r_1}-\vec{r_2})^2} \hat{r_{12}}$. The Einstein gravity also does not show directional dependence at least microscopically.  If the gravity attracts massive objects together isotropically, and the macroscopic space dimension is 3-dimensional, it seems to be natural to have a spherical shape of massive objects gather together. Such as the globular clusters, or GC, are roughly spherical groupings , as shown in the Wiki picture:     However, my impression is that, even if we have observed some more spherical or more-ball-like , it is more common to find more-planar  such as our ? (Is this statement correct? Let me know if I am wrong.)  Also, such have a look at this more-planar Spiral "galaxy" as this NGC 4414 galaxy:    Is there some physics or math theory explains why the  turns out to be planar-like (or spiral-like) instead of spherical-like?  See also a   p.s. Other than the classical stability of a 2D plane perpendicular to a classical angular momentum, is there an interpretation in terms of the quantum theory of vortices in a macroscopic manner (just my personal speculation)?  Thank you for your comments/answers! What is the difference between cascade & inverse in hibernate, what are they used for? I wanted to know how I could configure multi-touch gestures in Ubuntu. In windows I can do this using the synaptics driver software.  I have already used synclient to configure the taps, palmdetect, scroll, etc. But I'd also want gesture support. Is is even possible?  System-Info: Ubuntu 12.10, Synaptics clickpad How can I make the Logitech Wingman Formula Force steering wheel work in Vista and 64 bit Windows 7? Start modal operator from a click in panel I want to start a modal operator by clicking a button in a panel in the properties region. It should then stop when I click somewhere in the 3D viewport. I want to execute some code when I start and finish the operator (see the code below). I tried modifiyng the modal operator template with an execute method to start the modal operator. But the now the context.space_data.type is always &quot;PROPERTIES&quot; because that's where the panel is located, I guess. Is this a bad way of doing what I want? class MY_OPERATOR_OT_click_on_3dview(bpy.types.Operator):          bl_idname = &quot;mesh.click_on_3dview&quot;     bl_label = &quot;Click on 3D&quot;      def modal(self, context, event):                  if context.space_data.type != 'VIEW_3D':             return {'PASS_THROUGH'}                  if event.type in {'MIDDLEMOUSE', 'WHEELUPMOUSE', 'WHEELDOWNMOUSE'}:             # allow navigation             return {'PASS_THROUGH'}         elif event.type == 'LEFTMOUSE':             # DO ALL THE POST-SELECT STUFF             return {'FINISHED'}         elif event.type in {'RIGHTMOUSE', 'ESC'}:             return {'CANCELLED'}          return {'RUNNING_MODAL'}      def execute(self, context):         # DO ALL THE SETUP STUFF           context.window_manager.modal_handler_add(self)              return {'RUNNING_MODAL'}            def cancel(self, context):         print(&quot;CANCEL???&quot;)