1 | Duchamp version 1.0.5 (2006/09/06) |
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2 | ---------------------------------- |
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3 | |
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4 | Since version 1.0, there have been a range of mostly minor |
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5 | changes. These are generally bug-fixes, thanks to feedback from a |
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6 | number of users, as well as a few extra features. |
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7 | |
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8 | Here is a summary of the changes since version 1.0: |
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9 | |
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10 | USER INTERFACE: |
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11 | |
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12 | * The user is now able to enter the value of flag parameters in the |
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13 | parameter file as strings, as well as integers (so one can enter |
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14 | true or 1 to give the same result). |
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15 | |
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16 | GRAPHICAL OUTPUT: |
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17 | |
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18 | * Added a new function that draws the edge of the blank region on the |
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19 | maps and image cutouts. There is a new flag parameter -- |
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20 | drawBlankEdges -- that controls the use of this function (the |
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21 | default is true). |
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22 | Also, the edge of the field is plotted on the image cutouts as a |
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23 | yellow line. This distinguishes it from the purple blank pixel |
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24 | dividing line. |
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25 | |
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26 | * The size of the tick mark in the image cutout (indicating the |
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27 | spatial scale of the image) is now adaptable, so that it shows the |
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28 | scale that best fits the image (ranging from 1 arcsec to 15 |
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29 | degrees). (This is a change from the previous standard length of 15 |
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30 | arcmin.) |
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31 | |
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32 | * The zoomed spectrum had its flux scale determined by all points in |
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33 | the zoom box,including those flagged by the Milky Way (MW) |
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34 | range. This has been fixed so that any MW channels will not affect |
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35 | the flux scaling, potentially improving the appearance of objects |
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36 | detected close in velocity to strong MW emission or absorption. |
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37 | |
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38 | * Improved Karma Annotation file output, so that files without good |
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39 | WCS are dealt with appropriately. |
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40 | |
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41 | TEXT-BASED OUTPUT: |
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42 | |
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43 | * The position resolution in the IAU-format names has been increased, |
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44 | so that distinct objects close to one another are more readily |
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45 | distinguished. Overlapping sources at different velocities may |
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46 | still have the same name, but this is a more general problem. |
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47 | |
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48 | * The presentation of the results in tabular format has been improved, |
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49 | so that the precision of faint sources is sufficient to show their |
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50 | flux, for instance, is not 0. This also applies to the information |
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51 | presented above the spectral plots. |
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52 | |
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53 | * Improved error and warning reporting, so that the formatting and |
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54 | presentation of information is clearer. |
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55 | |
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56 | FITS I/O RELATED: |
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57 | |
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58 | * Fixed a bug that meant 4-dimensional FITS files were generating |
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59 | memory faults, both with the allocation of the necessary arrays and |
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60 | with the WCS-related calculations. |
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61 | |
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62 | * When the FITS file does not have a rest frequency defined, there is |
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63 | no way to transform the frequency axis into velocity. In this case, |
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64 | the spectral axis is left as frequency, and put into units of MHz. |
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65 | |
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66 | OTHER BUG-FIXING: |
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67 | |
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68 | * Several bugs related to the blank-pixels were dealt with. |
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69 | The correct values were not propagating through correctly, meaning |
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70 | that the default values were being used. Also, there was the |
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71 | potential for blank pixels to be detected when the FDR method was |
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72 | used. Finally, the image cutout displays occasionally did not |
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73 | obscure the blank pixels. All these problems should be fixed now. |
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74 | |
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75 | * The FDR setup routine was occasionally failing with a segmentation |
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76 | fault, due to it accessing unallocated memory. This has been fixed. |
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77 | |
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78 | * Fixed bugs that affected the way 2D images (rather than 3D cubes) |
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79 | were dealt with. The minChannels test failed when minChannels=0. |
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80 | |
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81 | * Other minor fixes to the code, to improve its structure and |
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82 | robustness. |
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83 | |
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84 | |
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85 | Duchamp version 1.0 (2006/06/30) |
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86 | -------------------------------- |
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87 | |
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88 | The first full release version. |
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89 | |
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90 | Several major changes compared to previous version: |
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91 | |
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92 | * Incorporated a FitsHeader class, to keep track of header information |
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93 | (including WCS) from the FITS file. All units-related calculations |
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94 | are done with this class, such as conversion to velocity, and |
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95 | pixel-to-WCS conversion. The main advantage of this is improved |
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96 | speed of execution, more adaptable to different units, and improved |
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97 | code (easier for me!). |
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98 | |
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99 | * Able to select the dimensionality of the reconstruction, rather than |
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100 | just doing it in 3-D. |
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101 | |
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102 | * Robust text output, so that the columns are sized correctly given |
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103 | the data being written, and the relevant units (derived from the |
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104 | FITS header) are included in the output table. |
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105 | |
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106 | * Improved the way the reconstructed image is saved and read back in, |
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107 | with a better naming scheme and a better set of new FITS header |
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108 | keywords. The MW headers are now not written. |
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109 | |
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110 | Other, more minor changes include: |
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111 | |
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112 | * MW channels now not set to 0, but just ignored for searching |
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113 | purposes (and for the scaling of the spectral output -- they are |
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114 | plotted though and highlighted with a hashed box). |
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115 | |
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116 | * The scale bar in the moment map in the spectral output file has its |
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117 | length indicated. |
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118 | |
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119 | * Improved VOTable output, with more information about the way Duchamp |
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120 | was run. |
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121 | |
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122 | * Made sure all statistics calculations in the reconstruction are |
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123 | based on robust (ie. median) methods. |
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124 | |
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125 | Also moved to an autoconf based configure/make compilation, for ease of use. |
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126 | |
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127 | |
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128 | Duchamp version 0.9.2 (2006/06/27) |
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129 | -------------------------------- |
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130 | |
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131 | * Added the use of warning flags for detections: for either edge |
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132 | location or negative enclosed flux. |
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133 | |
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134 | * A new command line option added so that the user can specify a FITS |
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135 | file to be searched with the default parameters, rather than giving |
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136 | a full parameter file. |
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137 | |
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138 | * The scale bar on the moment cutout now works in general case, using |
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139 | an iterative process to get to the correct length. |
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140 | |
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141 | * RA axes are now done correctly on the full-scale maps. |
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142 | |
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143 | * Various coding fixes, improving the readability of the code, |
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144 | particularly regarding the declaration of temporary variables. |
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145 | |
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146 | * Changed the way the time of execution is called : now using time.h |
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147 | functions, rather than a system call. |
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148 | |
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149 | * Changed output in Detection/outputDetection.cc for the pixel |
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150 | information of detected objects (the info printed above the spectral |
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151 | plots) -- now print out number of voxels in object, and have |
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152 | improved the formatting a little. |
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153 | |
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154 | * Improved the functionality of saving the FITS file containing the |
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155 | reconstructed array. Added ability to save and read back in the MW |
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156 | parameters when saving a reconstructed cube (if a reconstructed cube |
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157 | has different MW range to that being considered, it would cause |
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158 | problems). ReadRecon now just returns a FAILURE and will reconstruct |
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159 | the cube anew. |
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160 | |
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161 | * Changed default value of flagGrowth to 0. |
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162 | |
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163 | |
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164 | |
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165 | Duchamp version 0.9 (2006/05/05) |
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166 | -------------------------------- |
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167 | |
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168 | First public release version. |
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