1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> 2 3<!--Converted with LaTeX2HTML 2018.3 (Released July 19, 2018) --> 4<HTML lang="EN"> 5<HEAD> 6<TITLE>HEALPix/IDL subroutines</TITLE> 7<META NAME="description" CONTENT="HEALPix/IDL subroutines"> 8<META NAME="keywords" CONTENT="idl"> 9<META NAME="resource-type" CONTENT="document"> 10<META NAME="distribution" CONTENT="global"> 11 12<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8"> 13<META NAME="viewport" CONTENT="width=device-width, initial-scale=1.0"> 14<META NAME="Generator" CONTENT="LaTeX2HTML v2018.3"> 15 <link rel='apple-touch-icon' sizes='180x180' href='images/favicons/apple-touch-icon.png?v=2017'> 16 <link rel='icon' type='image/png' sizes='32x32' href='images/favicons/favicon-32x32.png?v=2017'> 17 <link rel='icon' type='image/png' sizes='16x16' href='images/favicons/favicon-16x16.png?v=2017'> 18 <link rel='manifest' href='images/favicons/manifest.json?v=2017'> 19 <link rel='mask-icon' href='images/favicons/safari-pinned-tab.svg?v=2017' color='#5bbad5'> 20 <link rel='shortcut icon' href='images/favicons/favicon.ico?v=2017'> 21 <meta name='apple-mobile-web-app-title' content='HEALPix'> 22 <meta name='application-name' content='HEALPix'> 23 <meta name='msapplication-config' content='images/favicons/browserconfig.xml?v=2017'> 24 <meta name='theme-color' content='#ffffff'> 25 26<LINK REL="STYLESHEET" HREF="idl.css"> 27 28<LINK REL="next" HREF="idl_TABLE_CONTENTS.htm"> 29</HEAD> 30 31<body text="#000000" bgcolor="#FFFFFA"> 32 33<DIV CLASS="navigation"><!--Navigation Panel--> 34<IMG WIDTH="63" HEIGHT="24" ALT="previous" SRC="prev_g.png"> 35<A 36 HREF="main.htm"> 37<IMG WIDTH="26" HEIGHT="24" ALT="up" SRC="up.png"></A> 38<A 39 HREF="idl_TABLE_CONTENTS.htm"> 40<IMG WIDTH="37" HEIGHT="24" ALT="next" SRC="next.png"></A> 41<A ID="tex2html86" 42 HREF="idl_TABLE_CONTENTS.htm"> 43<IMG WIDTH="65" HEIGHT="24" ALT="contents" SRC="contents.png"></A> 44<BR> 45<B>Up:</B> <A 46 HREF="main.htm">Main Page</A> 47 48<B> Next:</B> <A 49 HREF="idl_TABLE_CONTENTS.htm">TABLE OF CONTENTS</A> 50<B> Top:</B> <a href="main.htm">Main Page</a></DIV> 51<!--End of Navigation Panel--> 52 53<A ID="idl:idlxxx"></A> 54 55<P> 56<H1 ALIGN=CENTER><b>HEALPix</b> IDL Facilities Overview</H1> 57<div id=abstract align=center>This document is an overview of the <b>HEALPix</b> IDL facilities.</div> 58<P ALIGN=CENTER><STRONG>Eric Hivon, Anthony J. Banday, Benjamin D. Wandelt, Frode 59K. Hansen and Krzysztof M. Górski</STRONG></P> 60<BR><P ALIGN=CENTER><I>Revision: </I>Version 3.50; December 10, 2018</P> 61<P ALIGN=CENTER><A ID="tex2html1" 62 HREF="https://healpix.sourceforge.io">https://healpix.sourceforge.io</A> 63<BR><A ID="tex2html2" 64 HREF="http://healpix.sf.net">http://healpix.sf.net</A></P> 65 66<BR><HR> 67<!--Table of Child-Links--> 68<A ID="CHILD_LINKS"></A> 69 70<UL CLASS="ChildLinks"> 71<LI><A ID="tex2html88" 72 HREF="idl_TABLE_CONTENTS.htm">TABLE OF CONTENTS</A> 73<LI><A ID="tex2html89" 74 HREF="idl_Using_HEALPix_IDL_facilitie.htm">Using the <b>HEALPix</b>-IDL facilities</A> 75<UL> 76<LI><A ID="tex2html90" 77 HREF="idl_Using_HEALPix_IDL_facilitie.htm#SECTION210">Using <b>HEALPix</b>-IDL together with other IDL libraries</A> 78<LI><A ID="tex2html91" 79 HREF="idl_Using_HEALPix_IDL_facilitie.htm#SECTION220">Using GDL or FL instead of IDL</A> 80</UL> 81<BR> 82<LI><A ID="tex2html92" 83 HREF="idl_What_is_available.htm">What is available?</A> 84<UL> 85<LI><A ID="tex2html93" 86 HREF="idl_What_is_available.htm#SECTION310">Maps related tools</A> 87<LI><A ID="tex2html94" 88 HREF="idl_What_is_available.htm#SECTION320">Pixels related tools</A> 89<LI><A ID="tex2html95" 90 HREF="idl_What_is_available.htm#SECTION330">Power spectrum, alm, beam and pixel window functions</A> 91<LI><A ID="tex2html96" 92 HREF="idl_What_is_available.htm#SECTION340">Other tools</A> 93</UL> 94<BR> 95<LI><A ID="tex2html97" 96 HREF="idl_Changes_between_releases_3_.htm">Changes between releases 3.40 and 3.50</A> 97<LI><A ID="tex2html98" 98 HREF="idl_Changes_between_releases_3_.htm#SECTION500">Changes between releases 3.31 and 3.40</A> 99<LI><A ID="tex2html99" 100 HREF="idl_Previous_changes.htm">Previous changes</A> 101<UL> 102<LI><A ID="tex2html100" 103 HREF="idl_Previous_changes.htm#SECTION601">Changes between releases 3.30 and 3.31</A> 104<LI><A ID="tex2html101" 105 HREF="idl_Previous_changes.htm#SECTION602">Changes between releases 3.20 and 3.30</A> 106<LI><A ID="tex2html102" 107 HREF="idl_Previous_changes.htm#SECTION603">Changes between releases 3.11 and 3.20</A> 108<LI><A ID="tex2html103" 109 HREF="idl_Previous_changes.htm#SECTION604">Changes between releases 3.00 and 3.11</A> 110<LI><A ID="tex2html104" 111 HREF="idl_Previous_changes.htm#SECTION605">Changes between releases 2.20 and 3.00</A> 112<LI><A ID="tex2html105" 113 HREF="idl_Previous_changes.htm#SECTION606">Changes between release 2.0 and 2.20</A> 114</UL> 115<BR> 116<LI><A ID="tex2html106" 117 HREF="idl_alm_i2t.htm">alm_i2t</A> 118<LI><A ID="tex2html107" 119 HREF="idl_alm_t2i.htm">alm_t2i</A> 120<LI><A ID="tex2html108" 121 HREF="idl_alm2fits.htm">alm2fits</A> 122<LI><A ID="tex2html109" 123 HREF="idl_ang2vec.htm">ang2vec</A> 124<LI><A ID="tex2html110" 125 HREF="idl_angulardistance.htm">angulardistance</A> 126<LI><A ID="tex2html111" 127 HREF="idl_azeqview.htm">azeqview</A> 128<LI><A ID="tex2html112" 129 HREF="idl_beam2bl.htm">beam2bl</A> 130<LI><A ID="tex2html113" 131 HREF="idl_bin_llcl.htm">bin_llcl</A> 132<LI><A ID="tex2html114" 133 HREF="idl_bl2beam.htm">bl2beam</A> 134<LI><A ID="tex2html115" 135 HREF="idl_bl2fits.htm">bl2fits</A> 136<LI><A ID="tex2html116" 137 HREF="idl_cartcursor.htm">cartcursor</A> 138<LI><A ID="tex2html117" 139 HREF="idl_cartview.htm">cartview</A> 140<LI><A ID="tex2html118" 141 HREF="idl_change_polcconv.htm">change_polcconv </A> 142<LI><A ID="tex2html119" 143 HREF="idl_cl2fits.htm">cl2fits</A> 144<LI><A ID="tex2html120" 145 HREF="idl_convert_oldhpx2cmbfast.htm">convert_oldhpx2cmbfast</A> 146<LI><A ID="tex2html121" 147 HREF="idl_euler_matrix_new.htm">euler_matrix_new</A> 148<LI><A ID="tex2html122" 149 HREF="idl_fits2alm.htm">fits2alm</A> 150<LI><A ID="tex2html123" 151 HREF="idl_fits2cl.htm">fits2cl</A> 152<LI><A ID="tex2html124" 153 HREF="idl_gaussbeam.htm">gaussbeam</A> 154<LI><A ID="tex2html125" 155 HREF="idl_getdisc_ring.htm">getdisc_ring </A> 156<LI><A ID="tex2html126" 157 HREF="idl_getsize_fits.htm">getsize_fits </A> 158<LI><A ID="tex2html127" 159 HREF="idl_gnomcursor.htm">gnomcursor</A> 160<LI><A ID="tex2html128" 161 HREF="idl_gnomview.htm">gnomview</A> 162<LI><A ID="tex2html129" 163 HREF="idl_healpix_doc_PDF_HTML_docume.htm">healpix_doc: PDF and HTML documentation</A> 164<LI><A ID="tex2html130" 165 HREF="idl_healpixwindow.htm">healpixwindow</A> 166<LI><A ID="tex2html131" 167 HREF="idl_help_st.htm">help_st</A> 168<LI><A ID="tex2html132" 169 HREF="idl_hpx2dm.htm">hpx2dm</A> 170<LI><A ID="tex2html133" 171 HREF="idl_hpx2gs.htm">hpx2gs</A> 172<LI><A ID="tex2html134" 173 HREF="idl_ialteralm.htm">ialteralm</A> 174<LI><A ID="tex2html135" 175 HREF="idl_ianafast.htm">ianafast</A> 176<LI><A ID="tex2html136" 177 HREF="idl_index2lm.htm">index2lm</A> 178<LI><A ID="tex2html137" 179 HREF="idl_init_healpix_healpix_system.htm">init_healpix and !healpix system variable</A> 180<LI><A ID="tex2html138" 181 HREF="idl_iprocess_mask.htm">iprocess_mask</A> 182<LI><A ID="tex2html139" 183 HREF="idl_ismoothing.htm">ismoothing</A> 184<LI><A ID="tex2html140" 185 HREF="idl_isynfast.htm">isynfast</A> 186<LI><A ID="tex2html141" 187 HREF="idl_lm2index.htm">lm2index</A> 188<LI><A ID="tex2html142" 189 HREF="idl_median_filter.htm">median_filter </A> 190<LI><A ID="tex2html143" 191 HREF="idl_mollcursor.htm">mollcursor</A> 192<LI><A ID="tex2html144" 193 HREF="idl_mollview.htm">mollview</A> 194<LI><A ID="tex2html145" 195 HREF="idl_neighbours_nest.htm">neighbours_nest</A> 196<LI><A ID="tex2html146" 197 HREF="idl_neighbours_ring.htm">neighbours_ring</A> 198<LI><A ID="tex2html147" 199 HREF="idl_nest2uniq.htm">nest2uniq</A> 200<LI><A ID="tex2html148" 201 HREF="idl_npix2nside.htm">npix2nside </A> 202<LI><A ID="tex2html149" 203 HREF="idl_nside2npix.htm">nside2npix</A> 204<LI><A ID="tex2html150" 205 HREF="idl_nside2npweights.htm">nside2npweights</A> 206<LI><A ID="tex2html151" 207 HREF="idl_nside2ntemplates.htm">nside2ntemplates</A> 208<LI><A ID="tex2html152" 209 HREF="idl_orthcursor.htm">orthcursor</A> 210<LI><A ID="tex2html153" 211 HREF="idl_orthview.htm">orthview</A> 212<LI><A ID="tex2html154" 213 HREF="idl_pix2xxx_ang2xxx_vec2xxx_nes.htm">pix2xxx, ang2xxx, vec2xxx, nest2ring, ring2nest</A> 214<LI><A ID="tex2html155" 215 HREF="idl_planck_colors.htm">planck_colors</A> 216<LI><A ID="tex2html156" 217 HREF="idl_query_disc.htm">query_disc </A> 218<LI><A ID="tex2html157" 219 HREF="idl_query_polygon.htm">query_polygon </A> 220<LI><A ID="tex2html158" 221 HREF="idl_query_strip.htm">query_strip </A> 222<LI><A ID="tex2html159" 223 HREF="idl_query_triangle.htm">query_triangle </A> 224<LI><A ID="tex2html160" 225 HREF="idl_read_fits_cut4.htm">read_fits_cut4 </A> 226<LI><A ID="tex2html161" 227 HREF="idl_read_fits_map.htm">read_fits_map</A> 228<LI><A ID="tex2html162" 229 HREF="idl_read_fits_s.htm">read_fits_s </A> 230<LI><A ID="tex2html163" 231 HREF="idl_read_tqu.htm">read_tqu</A> 232<LI><A ID="tex2html164" 233 HREF="idl_remove_dipole.htm">remove_dipole</A> 234<LI><A ID="tex2html165" 235 HREF="idl_reorder.htm">reorder </A> 236<LI><A ID="tex2html166" 237 HREF="idl_rotate_coord.htm">rotate_coord</A> 238<LI><A ID="tex2html167" 239 HREF="idl_same_shape_pixels_nest_same.htm">same_shape_pixels_nest & same_shape_pixels_ring</A> 240<LI><A ID="tex2html168" 241 HREF="idl_template_pixel_nest_templat.htm">template_pixel_nest & template_pixel_ring</A> 242<LI><A ID="tex2html169" 243 HREF="idl_ud_grade.htm">ud_grade</A> 244<LI><A ID="tex2html170" 245 HREF="idl_unfold_weights.htm">unfold_weights</A> 246<LI><A ID="tex2html171" 247 HREF="idl_uniq2nest.htm">uniq2nest</A> 248<LI><A ID="tex2html172" 249 HREF="idl_vec2ang.htm">vec2ang </A> 250<LI><A ID="tex2html173" 251 HREF="idl_write_fits_cut4.htm">write_fits_cut4 </A> 252<LI><A ID="tex2html174" 253 HREF="idl_write_fits_map.htm">write_fits_map</A> 254<LI><A ID="tex2html175" 255 HREF="idl_write_fits_sb.htm">write_fits_sb</A> 256<LI><A ID="tex2html176" 257 HREF="idl_write_tqu.htm">write_tqu</A> 258<LI><A ID="tex2html177" 259 HREF="idl_About_this_document.htm">About this document ...</A> 260</UL> 261<!--End of Table of Child-Links--> 262 263<DIV CLASS="navigation"><HR> 264<!--Navigation Panel--> 265<IMG WIDTH="63" HEIGHT="24" ALT="previous" SRC="prev_g.png"> 266<A 267 HREF="main.htm"> 268<IMG WIDTH="26" HEIGHT="24" ALT="up" SRC="up.png"></A> 269<A 270 HREF="idl_TABLE_CONTENTS.htm"> 271<IMG WIDTH="37" HEIGHT="24" ALT="next" SRC="next.png"></A> 272<A ID="tex2html86" 273 HREF="idl_TABLE_CONTENTS.htm"> 274<IMG WIDTH="65" HEIGHT="24" ALT="contents" SRC="contents.png"></A> 275<BR> 276<B>Up:</B> <A 277 HREF="main.htm">Main Page</A> 278 279<B> Next:</B> <A 280 HREF="idl_TABLE_CONTENTS.htm">TABLE OF CONTENTS</A> 281<B> Top:</B> <a href="main.htm">Main Page</a></DIV> 282<!--End of Navigation Panel--> 283<ADDRESS> 284Version 3.50, 2018-12-10 285</ADDRESS> 286</BODY> 287</HTML> 288
